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Mechanics of Materials | 7th Edition | ISBN: 9780073398235 | Authors: Ferdinand P. Beer; E. Russell Johnston Jr.; John T. DeWolf; David F. Mazurek
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Author: Ferdinand P. Beer; E. Russell Johnston Jr.; John T. DeWolf; David F. Mazurek
Publisher: McGraw-Hill Education
ISBN: 9780073398235
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Chapter 5 Problems

Chapter: 5 Problem: 5.1

Mechanics of Materials 7
For the beam and loading shown, (a) draw the shear and bending-moment diagrams, (b) determine the equations of the shear and bending-moment curves.

Chapter: 5 Problem: 5.2

Mechanics of Materials 7
For the beam and loading shown, (a) draw the shear and bending-moment diagrams, (b) determine the equations of the shear and bending-moment curves.

Chapter: 5 Problem: 5.3

Mechanics of Materials 7
For the beam and loading shown, (a) draw the shear and bending-moment diagrams, (b) determine the equations of the shear and bending-moment curves.

Chapter: 5 Problem: 5.4

Mechanics of Materials 7
For the beam and loading shown, (a) draw the shear and bending-moment diagrams, (b) determine the equations of the shear and bending-moment curves.

Chapter: 5 Problem: 5.5

Mechanics of Materials 7
For the beam and loading shown, (a) draw the shear and bending-moment diagrams, (b) determine the equations of the shear and bending-moment curves.

Chapter: 5 Problem: 5.6

Mechanics of Materials 7
For the beam and loading shown, (a) draw the shear and bending-moment diagrams, (b) determine the equations of the shear and bending-moment curves.

Chapter: 5 Problem: 5.7

Mechanics of Materials 7
Draw the shear and bending-moment diagrams for the beam and loading shown, and determine the maximum absolute value (a) of the shear, (b) of the bending moment.

Chapter: 5 Problem: 5.8

Mechanics of Materials 7
Draw the shear and bending-moment diagrams for the beam and loading shown, and determine the maximum absolute value (a) of the shear, (b) of the bending moment.

Chapter: 5 Problem: 5.9

Mechanics of Materials 7
Draw the shear and bending-moment diagrams for the beam and loading shown, and determine the maximum absolute value (a) of the shear, (b) of the bending moment.

Chapter: 5 Problem: 5.10

Mechanics of Materials 7
Draw the shear and bending-moment diagrams for the beam and loading shown, and determine the maximum absolute value (a) of the shear, (b) of the bending moment.

Chapter: 5 Problem: 5.11

Mechanics of Materials 7
Draw the shear and bending-moment diagrams for the beam and loading shown, and determine the maximum absolute value (a) of the shear, (b) of the bending moment.

Chapter: 5 Problem: 5.12

Mechanics of Materials 7
Draw the shear and bending-moment diagrams for the beam and loading shown, and determine the maximum absolute value (a) of the shear, (b) of the bending moment.

Chapter: 5 Problem: 5.13

Mechanics of Materials 7
Assuming that the reaction of the ground is uniformly distributed, draw the shear and bending-moment diagrams for the beam AB and determine the maximum absolute value (a) of the shear, (b) of the bending moment.

Chapter: 5 Problem: 5.14

Mechanics of Materials 7
Assuming that the reaction of the ground is uniformly distributed, draw the shear and bending-moment diagrams for the beam AB and determine the maximum absolute value (a) of the shear, (b) of the bending moment.

Chapter: 5 Problem: 5.15

Mechanics of Materials 7
For the beam and loading shown, determine the maximum normal stress due to bending on a transverse section at C.

Chapter: 5 Problem: 5.16

Mechanics of Materials 7
For the beam and loading shown, determine the maximum normal stress due to bending on a transverse section at C.

Chapter: 5 Problem: 5.17

Mechanics of Materials 7
For the beam and loading shown, determine the maximum normal stress due to bending on a transverse section at C.

Chapter: 5 Problem: 5.18

Mechanics of Materials 7
For the beam and loading shown, determine the maximum normal stress due to bending on section a-a.

Chapter: 5 Problem: 5.19

Mechanics of Materials 7
For the beam and loading shown, determine the maximum normal stress due to bending on a transverse section at C.

Chapter: 5 Problem: 5.20

Mechanics of Materials 7
For the beam and loading shown, determine the maximum normal stress due to bending on a transverse section at C.

Chapter: 5 Problem: 5.21

Mechanics of Materials 7
Draw the shear and bending-moment diagrams for the beam and loading shown and determine the maximum normal stress due to bending.

Chapter: 5 Problem: 5.22

Mechanics of Materials 7
Draw the shear and bending-moment diagrams for the beam and loading shown and determine the maximum normal stress due to bending.

Chapter: 5 Problem: 5.23

Mechanics of Materials 7
Draw the shear and bending-moment diagrams for the beam and loading shown and determine the maximum normal stress due to bending.

Chapter: 5 Problem: 5.24

Mechanics of Materials 7
Draw the shear and bending-moment diagrams for the beam and loading shown and determine the maximum normal stress due to bending.

Chapter: 5 Problem: 5.25

Mechanics of Materials 7
Draw the shear and bending-moment diagrams for the beam and loading shown and determine the maximum normal stress due to bending.

Chapter: 5 Problem: 5.26

Mechanics of Materials 7
Knowing that W = 12 kN, draw the shear and bending-moment diagrams for beam AB and determine the maximum normal stress due to bending.

Chapter: 5 Problem: 5.27

Mechanics of Materials 7
Determine (a) the magnitude of the counterweight W for which the maximum absolute value of the bending moment in the beam is as small as possible, (b) the corresponding maximum normal stress due to bending. (Hint: Draw the bending-moment diagram and equate the absolute values of the largest positive

Chapter: 5 Problem: 5.28

Mechanics of Materials 7
Determine (a) the distance a for which the absolute value of the bending moment in the beam is as small as possible, (b) the corresponding maximum normal stress due to bending. (See hint of Prob. 5.27.)

Chapter: 5 Problem: 5.29

Mechanics of Materials 7
Knowing that P = Q = 480 N, determine (a) the distance a for which the absolute value of the bending moment in the beam is as small as possible, (b) the corresponding maximum normal stress due to bending. (See hint of Prob. 5.27.)

Chapter: 5 Problem: 5.30

Mechanics of Materials 7
Solve Prob. 5.29, assuming that P = 480 N and Q = 320 N.

Chapter: 5 Problem: 5.31

Mechanics of Materials 7
Determine (a) the distance a for which the absolute value of the bending moment in the beam is as small as possible, (b) the corresponding maximum normal stress due to bending. (See hint of Prob. 5.27.)

Chapter: 5 Problem: 5.32

Mechanics of Materials 7
A solid steel rod of diameter d is supported as shown. Knowing that for steel \(\gamma=490 \mathrm{~lb/ft^3}\), determine the smallest diameter d that can be used if the normal stress due to bending is not to exceed 4 ksi.

Chapter: 5 Problem: 5.33

Mechanics of Materials 7
A solid steel bar has a square cross section of side b and is supported as shown. Knowing that for steel \(\rho=7860~\mathrm{kg/m^3}\), determine the dimension b for which the maximum normal stress due to bending is (a) 10 MPa, (b) 50 MPa.

Chapter: 5 Problem: 5.34

Mechanics of Materials 7
Using the method of Sec. 5.2, solve Prob. 5.1a.

Chapter: 5 Problem: 5.35

Mechanics of Materials 7
Using the method of Sec. 5.2, solve Prob. 5.2a.

Chapter: 5 Problem: 5.36

Mechanics of Materials 7
Using the method of Sec. 5.2, solve Prob. 5.3a.

Chapter: 5 Problem: 5.37

Mechanics of Materials 7
Using the method of Sec. 5.2, solve Prob. 5.4a.

Chapter: 5 Problem: 5.38

Mechanics of Materials 7
Using the method of Sec. 5.2, solve Prob. 5.5a.

Chapter: 5 Problem: 5.39

Mechanics of Materials 7
Using the method of Sec. 5.2, solve Prob. 5.6a.

Chapter: 5 Problem: 5.40

Mechanics of Materials 7
Using the method of Sec. 5.2, solve Prob. 5.7.

Chapter: 5 Problem: 5.41

Mechanics of Materials 7
Using the method of Sec. 5.2, solve Prob. 5.8.

Chapter: 5 Problem: 5.42

Mechanics of Materials 7
Using the method of Sec. 5.2, solve Prob. 5.9.

Chapter: 5 Problem: 5.43

Mechanics of Materials 7
Using the method of Sec. 5.2, solve Prob. 5.10.

Chapter: 5 Problem: 5.44

Mechanics of Materials 7
Draw the shear and bending-moment diagrams for the beam and loading shown, and determine the maximum absolute value (a) of the shear, (b) of the bending moment.

Chapter: 5 Problem: 5.45

Mechanics of Materials 7
Draw the shear and bending-moment diagrams for the beam and loading shown, and determine the maximum absolute value (a) of the shear, (b) of the bending moment.

Chapter: 5 Problem: 5.46

Mechanics of Materials 7
Using the method of Sec. 5.2, solve Prob. 5.15.

Chapter: 5 Problem: 5.47

Mechanics of Materials 7
Using the method of Sec. 5.2, solve Prob. 5.16.

Chapter: 5 Problem: 5.48

Mechanics of Materials 7
Using the method of Sec. 5.2, solve Prob. 5.18.

Chapter: 5 Problem: 5.49

Mechanics of Materials 7
Using the method of Sec. 5.2, solve Prob. 5.20.

Chapter: 5 Problem: 5.50

Mechanics of Materials 7
Determine (a) the equations of the shear and bending moment curves for the beam and loading shown, (b) the maximum absolute value of the bending moment in the beam.

Chapter: 5 Problem: 5.51

Mechanics of Materials 7
Determine (a) the equations of the shear and bending moment curves for the beam and loading shown, (b) the maximum absolute value of the bending moment in the beam.

Chapter: 5 Problem: 5.52

Mechanics of Materials 7
Determine (a) the equations of the shear and bendingmoment curves for the beam and loading shown, (b) the maximum absolute value of the bending moment in the beam.

Chapter: 5 Problem: 5.53

Mechanics of Materials 7
Determine (a) the equations of the shear and bendingmoment curves for the beam and loading shown, (b) the maximum absolute value of the bending moment in the beam.

Chapter: 5 Problem: 5.54

Mechanics of Materials 7
Draw the shear and bending-moment diagrams for the beam and loading shown and determine the maximum normal stress due to bending.

Chapter: 5 Problem: 5.55

Mechanics of Materials 7
Draw the shear and bending-moment diagrams for the beam and loading shown and determine the maximum normal stress due to bending.

Chapter: 5 Problem: 5.56

Mechanics of Materials 7
Draw the shear and bending-moment diagrams for the beam and loading shown and determine the maximum normal stress due to bending.

Chapter: 5 Problem: 5.57

Mechanics of Materials 7
Draw the shear and bending-moment diagrams for the beam and loading shown and determine the maximum normal stress due to bending.

Chapter: 5 Problem: 5.58

Mechanics of Materials 7
Draw the shear and bending-moment diagrams for the beam and loading shown and determine the maximum normal stress due to bending.

Chapter: 5 Problem: 5.59

Mechanics of Materials 7
Draw the shear and bending-moment diagrams for the beam and loading shown and determine the maximum normal stress due to bending.

Chapter: 5 Problem: 5.60

Mechanics of Materials 7
Knowing that beam AB is in equilibrium under the loading shown, draw the shear and bending-moment diagrams and determine the maximum normal stress due to bending.

Chapter: 5 Problem: 5.61

Mechanics of Materials 7
Knowing that beam AB is in equilibrium under the loading shown, draw the shear and bending-moment diagrams and determine the maximum normal stress due to bending.

Chapter: 5 Problem: 5.62

Mechanics of Materials 7
The beam AB supports two concentrated loads P and Q. The normal stress due to bending on the bottom edge of the beam is +55 MPa at D and +37.5 MPa at F. (a) Draw the shear and bending-moment diagrams for the beam. (b) Determine the maximum normal stress due to bending that occurs in the beam.

Chapter: 5 Problem: 5.63

Mechanics of Materials 7
The beam AB supports a uniformly distributed load of 480 lb/ft and two concentrated loads P and Q. The normal stress due to bending on the bottom edge of the lower flange is +14.85 ksi at D and +10.65 ksi at E. (a) Draw the shear and bending-moment diagrams for the beam. (b) Determine the maximum nor

Chapter: 5 Problem: 5.64

Mechanics of Materials 7
Beam AB supports a uniformly distributed load of 2 kN/m and two concentrated loads P and Q. It has been experimentally determined that the normal stress due to bending in the bottom edge of the beam is = 56.9 MPa at A and =29.9 MPa at C. Draw the shear and bending-moment diagrams for the beam and det

Chapter: 5 Problem: 5.65

Mechanics of Materials 7
For the beam and loading shown, design the cross section of the beam, knowing that the grade of timber used has an allowable normal stress of 12 MPa.

Chapter: 5 Problem: 5.66

Mechanics of Materials 7
For the beam and loading shown, design the cross section of the beam, knowing that the grade of timber used has an allowable normal stress of 12 MPa.

Chapter: 5 Problem: 5.67

Mechanics of Materials 7
For the beam and loading shown, design the cross section of the beam, knowing that the grade of timber used has an allowable normal stress of 1750 psi.

Chapter: 5 Problem: 5.68

Mechanics of Materials 7
For the beam and loading shown, design the cross section of the beam, knowing that the grade of timber used has an allowable normal stress of 1750 psi.

Chapter: 5 Problem: 5.69

Mechanics of Materials 7
For the beam and loading shown, design the cross section of the beam, knowing that the grade of timber used has an allowable normal stress of 12 MPa.

Chapter: 5 Problem: 5.70

Mechanics of Materials 7
For the beam and loading shown, design the cross section of the beam, knowing that the grade of timber used has an allowable normal stress of 12 MPa.

Chapter: 5 Problem: 5.71

Mechanics of Materials 7
Knowing that the allowable normal stress for the steel used is 24 ksi, select the most economical wide-flange beam to support the loading shown.

Chapter: 5 Problem: 5.72

Mechanics of Materials 7
Knowing that the allowable normal stress for the steel used is 24 ksi, select the most economical wide-flange beam to support the loading shown.

Chapter: 5 Problem: 5.73

Mechanics of Materials 7
Knowing that the allowable normal stress for the steel used is 160 MPa, select the most economical wide-flange beam to support the loading shown.

Chapter: 5 Problem: 5.74

Mechanics of Materials 7
Knowing that the allowable normal stress for the steel used is 160 MPa, select the most economical wide-flange beam to support the loading shown.

Chapter: 5 Problem: 5.75

Mechanics of Materials 7
Knowing that the allowable normal stress for the steel used is 24 ksi, select the most economical S-shape beam to support the loading shown.

Chapter: 5 Problem: 5.76

Mechanics of Materials 7
Knowing that the allowable normal stress for the steel used is 24 ksi, select the most economical S-shape beam to support the loading shown.

Chapter: 5 Problem: 5.77

Mechanics of Materials 7
Knowing that the allowable normal stress for the steel used is 160 MPa, select the most economical S-shape beam to support the loading shown.

Chapter: 5 Problem: 5.78

Mechanics of Materials 7
Knowing that the allowable normal stress for the steel used is 160 MPa, select the most economical S-shape beam to support the loading shown.

Chapter: 5 Problem: 5.79

Mechanics of Materials 7
A steel pipe of 100-mm diameter is to support the loading shown. Knowing that the stock of pipes available has thicknesses varying from 6 mm to 24 mm in 3-mm increments, and that the allowable normal stress for the steel used is 150 MPa, determine the minimum wall thickness t that can be used.

Chapter: 5 Problem: 5.80

Mechanics of Materials 7
Two metric rolled-steel channels are to be welded along their edges and used to support the loading shown. Knowing that the allowable normal stress for the steel used is 150 MPa, determine the most economical channels that can be used.

Chapter: 5 Problem: 5.81

Mechanics of Materials 7
Two rolled-steel channels are to be welded back to back and used to support the loading shown. Knowing that the allowable normal stress for the steel used is 30 ksi, determine the most economical channels that can be used.

Chapter: 5 Problem: 5.82

Mechanics of Materials 7
Two L4 X 3 rolled-steel angles are bolted together and used to support the loading shown. Knowing that the allowable normal stress for the steel used is 24 ksi, determine the minimum angle thickness that can be used.

Chapter: 5 Problem: 5.83

Mechanics of Materials 7
Assuming the upward reaction of the ground to be uniformly distributed and knowing that the allowable normal stress for the steel used is 170 MPa, select the most economical wide-flange beam to support the loading shown.

Chapter: 5 Problem: 5.84

Mechanics of Materials 7
Assuming the upward reaction of the ground to be uniformly distributed and knowing that the allowable normal stress for the steel used is 24 ksi, select the most economical wide-flange beam to support the loading shown.

Chapter: 5 Problem: 5.85

Mechanics of Materials 7
Determine the largest permissible distributed load w for the beam shown, knowing that the allowable normal stress is +80 MPa in tension and -130 MPa in compression.

Chapter: 5 Problem: 5.86

Mechanics of Materials 7
Solve Prob. 5.85, assuming that the cross section of the beam is inverted, with the flange of the beam resting on the supports at B and C.

Chapter: 5 Problem: 5.87

Mechanics of Materials 7
Determine the largest permissible value of P for the beam and loading shown, knowing that the allowable normal stress is +8 ksi in tension and -18 ksi in compression.

Chapter: 5 Problem: 5.88

Mechanics of Materials 7
Solve Prob. 5.87, assuming that the T-shaped beam is inverted.

Chapter: 5 Problem: 5.89

Mechanics of Materials 7
Beams AB, BC, and CD have the cross section shown and are pin-connected at B and C. Knowing that the allowable normal stress is +110 MPa in tension and -150 MPa in compression, determine (a) the largest permissible value of w if beam BC is not to be overstressed, (b) the corresponding maximum distanc

Chapter: 5 Problem: 5.90

Mechanics of Materials 7
Beams AB, BC, and CD have the cross section shown and are pin-connected at B and C. Knowing that the allowable normal stress is +110 MPa in tension and -150 MPa in compression, determine (a) the largest permissible value of P if beam BC is not to be overstressed, (b) the corresponding maximum distanc

Chapter: 5 Problem: 5.91

Mechanics of Materials 7
Each of the three rolled-steel beams shown (numbered 1, 2, and 3) is to carry a 64-kip load uniformly distributed over the beam. Each of these beams has a 12-ft span and is to be supported by the two 24-ft rolled-steel girders AC and BD. Knowing that the allowable normal stress for the steel used is

Chapter: 5 Problem: 5.92

Mechanics of Materials 7
A 54-kip load is to be supported at the center of the 16-ft span shown. Knowing that the allowable normal stress for the steel used is 24 ksi, determine (a) the smallest allowable length l of beam CD if the W12 X 50 beam AB is not to be overstressed, (b) the most economical W shape that can be used f

Chapter: 5 Problem: 5.93

Mechanics of Materials 7
A uniformly distributed load of 66 kN/m is to be supported over the 6-m span shown. Knowing that the allowable normal stress for the steel used is 140 MPa, determine (a) the smallest allowable length l of beam CD if the W460 X 74 beam AB is not to be overstressed, (b) the most economical W shape that

Chapter: 5 Problem: 5.94

Mechanics of Materials 7
A roof structure consists of plywood and roofing material supported by several timber beams of length L = 16 m. The dead load carried by each beam, including the estimated weight of the beam, can be represented by a uniformly distributed load \(w_D = 350 \text{ N/m}\). The live load consists of a sno

Chapter: 5 Problem: 5.95

Mechanics of Materials 7
Solve Prob. 5.94, assuming that the 6-kN concentrated load P applied to each beam is replaced by 3-kN concentrated loads \(\mathbf P_1\) and \(\mathbf P_2\) applied at a distance of 4 m from each end of the beams.

Chapter: 5 Problem: 5.96

Mechanics of Materials 7
A bridge of length L = 48 ft is to be built on a secondary road whose access to trucks is limited to two-axle vehicles of medium weight. It will consist of a concrete slab and of simply supported steel beams with an ultimate strength \(\sigma_U = 60 \text{ ksi}\). The combined weight of the slab and

Chapter: 5 Problem: 5.97

Mechanics of Materials 7
Assuming that the front and rear axle loads remain in the same ratio as for the truck of Prob. 5.96, determine how much heavier a truck could safely cross the bridge designed in that problem.

Chapter: 5 Problem: 5.98

Mechanics of Materials 7
(a) Using singularity functions, write the equations defining the shear and bending moment for the beam and loading shown. (b) Use the equation obtained for M to determine the bending moment at point C, and check your answer by drawing the free-body diagram of the entire beam.

Chapter: 5 Problem: 5.99

Mechanics of Materials 7
(a) Using singularity functions, write the equations defining the shear and bending moment for the beam and loading shown. (b) Use the equation obtained for M to determine the bending moment at point C, and check your answer by drawing the free-body diagram of the entire beam.

Chapter: 5 Problem: 5.100

Mechanics of Materials 7
(a) Using singularity functions, write the equations defining the shear and bending moment for the beam and loading shown. (b) Use the equation obtained for M to determine the bending moment at point C, and check your answer by drawing the free-body diagram of the entire beam.

Chapter: 5 Problem: 5.101

Mechanics of Materials 7
(a) Using singularity functions, write the equations defining the shear and bending moment for the beam and loading shown. (b) Use the equation obtained for M to determine the bending moment at point E, and check your answer by drawing the free-body diagram of the portion of the beam to the right of

Chapter: 5 Problem: 5.102

Mechanics of Materials 7
(a) Using singularity functions, write the equations defining the shear and bending moment for the beam and loading shown. (b) Use the equation obtained for M to determine the bending moment at point E, and check your answer by drawing the free-body diagram of the portion of the beam to the right of

Chapter: 5 Problem: 5.103

Mechanics of Materials 7
(a) Using singularity functions, write the equations defining the shear and bending moment for the beam and loading shown. (b) Use the equation obtained for M to determine the bending moment at point E, and check your answer by drawing the free-body diagram of the portion of the beam to the right of

Chapter: 5 Problem: 5.104

Mechanics of Materials 7
(a) Using singularity functions, write the equations for the shear and bending moment for beam ABC under the loading shown. (b) Use the equation obtained for M to determine the bending moment just to the right of point B.

Chapter: 5 Problem: 5.105

Mechanics of Materials 7
(a) Using singularity functions, write the equations for the shear and bending moment for beam ABC under the loading shown. (b) Use the equation obtained for M to determine the bending moment just to the right of point B.

Chapter: 5 Problem: 5.106

Mechanics of Materials 7
(a) Using singularity functions, write the equations for the shear and bending moment for the beam and loading shown. (b) Determine the maximum value of the bending moment in the beam.

Chapter: 5 Problem: 5.107

Mechanics of Materials 7
(a) Using singularity functions, write the equations for the shear and bending moment for the beam and loading shown. (b) Determine the maximum value of the bending moment in the beam.

Chapter: 5 Problem: 5.108

Mechanics of Materials 7
(a) Using singularity functions, write the equations for the shear and bending moment for the beam and loading shown. (b) Determine the maximum value of the bending moment in the beam.

Chapter: 5 Problem: 5.109

Mechanics of Materials 7
(a) Using singularity functions, write the equations for the shear and bending moment for the beam and loading shown. (b) Determine the maximum value of the bending moment in the beam.

Chapter: 5 Problem: 5.110

Mechanics of Materials 7
(a) Using singularity functions, write the equations for the shear and bending moment for the beam and loading shown. (b) Determine the maximum normal stress due to bending.

Chapter: 5 Problem: 5.111

Mechanics of Materials 7
(a) Using singularity functions, write the equations for the shear and bending moment for the beam and loading shown. (b) Determine the maximum normal stress due to bending.

Chapter: 5 Problem: 5.112

Mechanics of Materials 7
(a) Using singularity functions, find the magnitude and location of the maximum bending moment for the beam and loading shown. (b) Determine the maximum normal stress due to bending.

Chapter: 5 Problem: 5.113

Mechanics of Materials 7
(a) Using singularity functions, find the magnitude and location of the maximum bending moment for the beam and loading shown. (b) Determine the maximum normal stress due to bending.

Chapter: 5 Problem: 5.114

Mechanics of Materials 7
A beam is being designed to be supported and loaded as shown. (a) Using singularity functions, find the magnitude and location of the maximum bending moment in the beam. (b) Knowing that the allowable normal stress for the steel to be used is 24 ksi, find the most economical wide-flange shape that ca

Chapter: 5 Problem: 5.115

Mechanics of Materials 7
A beam is being designed to be supported and loaded as shown. (a) Using singularity functions, find the magnitude and location of the maximum bending moment in the beam. (b) Knowing that the allowable normal stress for the steel to be used is 24 ksi, find the most economical wide-flange shape that ca

Chapter: 5 Problem: 5.116

Mechanics of Materials 7
A timber beam is being designed to be supported and loaded as shown. (a) Using singularity functions, find the magnitude and location of the maximum bending moment in the beam. (b) Knowing that the available stock consists of beams with an allowable normal stress of 12 MPa and a rectangular cross sec

Chapter: 5 Problem: 5.117

Mechanics of Materials 7
A timber beam is being designed to be supported and loaded as shown. (a) Using singularity functions, find the magnitude and location of the maximum bending moment in the beam. (b) Knowing that the available stock consists of beams with an allowable normal stress of 12 MPa and a rectangular cross sec

Chapter: 5 Problem: 5.118

Mechanics of Materials 7
Using a computer and step functions, calculate the shear and bending moment for the beam and loading shown. Use the specified increment \(\delta L\), starting at point A and ending at the right-hand support.

Chapter: 5 Problem: 5.119

Mechanics of Materials 7
Using a computer and step functions, calculate the shear and bending moment for the beam and loading shown. Use the specified increment \(\delta L\), starting at point A and ending at the right-hand support.

Chapter: 5 Problem: 5.120

Mechanics of Materials 7
Using a computer and step functions, calculate the shear and bending moment for the beam and loading shown. Use the specified increment \(\delta L\), starting at point A and ending at the right-hand support.

Chapter: 5 Problem: 5.121

Mechanics of Materials 7
Using a computer and step functions, calculate the shear and bending moment for the beam and loading shown. Use the specified increment \(\delta L\), starting at point A and ending at the right-hand support.

Chapter: 5 Problem: 5.122

Mechanics of Materials 7
For the beam and loading shown and using a computer and step functions, (a) tabulate the shear, bending moment, and maximum normal stress in sections of the beam from x = 0 to x = L, using the increments \(\Delta L\) indicated, (b) using smaller increments if necessary, determine with a 2% accuracy t

Chapter: 5 Problem: 5.123

Mechanics of Materials 7
For the beam and loading shown and using a computer and step functions, (a) tabulate the shear, bending moment, and maximum normal stress in sections of the beam from x = 0 to x = L, using the increments \(\Delta L\) indicated, (b) using smaller increments if necessary, determine with a 2% accuracy t

Chapter: 5 Problem: 5.124

Mechanics of Materials 7
For the beam and loading shown and using a computer and step functions, (a) tabulate the shear, bending moment, and maximum normal stress in sections of the beam from x = 0 to x = L, using the increments \(\Delta L\) indicated, (b) using smaller increments if necessary, determine with a 2% accuracy t

Chapter: 5 Problem: 5.125

Mechanics of Materials 7
For the beam and loading shown and using a computer and step functions, (a) tabulate the shear, bending moment, and maximum normal stress in sections of the beam from x = 0 to x = L, using the increments \(\Delta L\) indicated, (b) using smaller increments if necessary, determine with a 2% accuracy t

Chapter: 5 Problem: 5.126

Mechanics of Materials 7
The beam AB, consisting of a cast-iron plate of uniform thickness b and length L, is to support the load shown. (a) Knowing that the beam is to be of constant strength, express h in terms of x, L, and \(h_0\). (b) Determine the maximum allowable load if L = 36 in., \(h_0 = 12 \text{ in.}\), b = 1.25

Chapter: 5 Problem: 5.127

Mechanics of Materials 7
The beam AB, consisting of a cast-iron plate of uniform thickness b and length L, is to support the load shown. (a) Knowing that the beam is to be of constant strength, express h in terms of x, L, and \(h_0\). (b) Determine the maximum allowable load if L = 36 in., \(h_0 = 12 \text{ in.}\), b = 1.25

Chapter: 5 Problem: 5.128

Mechanics of Materials 7
The beam AB, consisting of a cast-iron plate of uniform thickness b and length L, is to support the distributed load w(x) shown. (a) Knowing that the beam is to be of constant strength, express h in terms of x, L, and \(h_0\). (b) Determine the smallest value of h0 if L = 750 mm, b = 30 mm, \(w_0 = 3

Chapter: 5 Problem: 5.129

Mechanics of Materials 7
The beam AB, consisting of a cast-iron plate of uniform thickness b and length L, is to support the distributed load w(x) shown. (a) Knowing that the beam is to be of constant strength, express h in terms of x, L, and \(h_0\). (b) Determine the smallest value of h0 if L = 750 mm, b = 30 mm, \(w_0 = 3

Chapter: 5 Problem: 5.130

Mechanics of Materials 7
The beam AB, consisting of an aluminum plate of uniform thickness b and length L, is to support the load shown. (a) Knowing that the beam is to be of constant strength, express h in terms of x, L, and \(h_0\) for portion AC of the beam. (b) Determine the maximum allowable load if L = 800 mm, \(h_0 =

Chapter: 5 Problem: 5.131

Mechanics of Materials 7
The beam AB, consisting of an aluminum plate of uniform thickness b and length L, is to support the load shown. (a) Knowing that the beam is to be of constant strength, express h in terms of x, L, and \(h_0\) for portion AC of the beam. (b) Determine the maximum allowable load if L = 800 mm, \(h_0 =

Chapter: 5 Problem: 5.132

Mechanics of Materials 7
A preliminary design on the use of a cantilever prismatic timber beam indicated that a beam with a rectangular cross section 2 in. wide and 10 in. deep would be required to safely support the load shown in part a of the figure. It was then decided to replace that beam with a built-up beam obtained by

Chapter: 5 Problem: 5.133

Mechanics of Materials 7
A preliminary design on the use of a cantilever prismatic timber beam indicated that a beam with a rectangular cross section 2 in. wide and 10 in. deep would be required to safely support the load shown in part a of the figure. It was then decided to replace that beam with a built-up beam obtained by

Chapter: 5 Problem: 5.134

Mechanics of Materials 7
A preliminary design on the use of a simply supported prismatic timber beam indicated that a beam with a rectangular cross section 50 mm wide and 200 mm deep would be required to safely support the load shown in part a of the figure. It was then decided to replace that beam with a built-up beam obtai

Chapter: 5 Problem: 5.135

Mechanics of Materials 7
A preliminary design on the use of a simply supported prismatic timber beam indicated that a beam with a rectangular cross section 50 mm wide and 200 mm deep would be required to safely support the load shown in part a of the figure. It was then decided to replace that beam with a built-up beam obtai

Chapter: 5 Problem: 5.136

Mechanics of Materials 7
A machine element of cast aluminum and in the shape of a solid of revolution of variable diameter d is being designed to support the load shown. Knowing that the machine element is to be of constant strength, express d in terms of x, L, and \(d_0\).

Chapter: 5 Problem: 5.137

Mechanics of Materials 7
A machine element of cast aluminum and in the shape of a solid of revolution of variable diameter d is being designed to support the load shown. Knowing that the machine element is to be of constant strength, express d in terms of x, L, and \(d_0\).

Chapter: 5 Problem: 5.138

Mechanics of Materials 7
A transverse force P is applied as shown at end A of the conical taper AB. Denoting by \(d_0\) the diameter of the taper at A, show that the maximum normal stress occurs at point H, which is contained in a transverse section of diameter \(d = 1.5~ d_0\).

Chapter: 5 Problem: 5.139

Mechanics of Materials 7
A cantilever beam AB consisting of a steel plate of uniform depth h and variable width b is to support the distributed load w along its centerline AB. (a) Knowing that the beam is to be of constant strength, express b in terms of x, L, and \(b_0\). (b) Determine the maximum allowable value of w if L

Chapter: 5 Problem: 5.140

Mechanics of Materials 7
Assuming that the length and width of the cover plates used with the beam of Sample Prob. 5.12 are, respectively, l = 4 m and b = 285 mm, and recalling that the thickness of each plate is 16 mm, determine the maximum normal stress on a transverse section (a) through the center of the beam, (b) just t

Chapter: 5 Problem: 5.141

Mechanics of Materials 7
Two cover plates, each \(\frac{1}{2}\)in. thick, are welded to a W27 X 84 beam as shown. Knowing that l = 10 ft and b = 10.5 in., determine the maximum normal stress on a transverse section (a) through the center of the beam, (b) just to the left of D.

Chapter: 5 Problem: 5.142

Mechanics of Materials 7
Two cover plates, each \(\frac{1}{2}\)in. thick, are welded to a W27 X 84 beam as shown. Knowing that \(\sigma_\text{all} = 24 \text{ ksi}\) for both the beam and the plates, determine the required value of (a) the length of the plates, (b) the width of the plates.

Chapter: 5 Problem: 5.143

Mechanics of Materials 7
Knowing that \(\sigma_\text{all} = 150 \text{ Mpa}\), determine the largest concentrated load P that can be applied at end E of the beam shown.

Chapter: 5 Problem: 5.144

Mechanics of Materials 7
Two cover plates, each 7.5 mm thick, are welded to a W460 X 74 beam as shown. Knowing that l = 5 m and b = 200 mm, determine the maximum normal stress on a transverse section (a) through the center of the beam, (b) just to the left of D.

Chapter: 5 Problem: 5.145

Mechanics of Materials 7
Two cover plates, each 7.5 mm thick, are welded to a W460 X 74 beam as shown. Knowing that \(\sigma_\text{all} = 150 \text{ Mpa}\) for both the beam and the plates, determine the required value of (a) the length of the plates, (b) the width of the plates.

Chapter: 5 Problem: 5.146

Mechanics of Materials 7
Two cover plates, each \(\frac{5}{8}\)in. thick, are welded to a W30 X 99 beam as shown. Knowing that l = 9 ft and b = 12 in., determine the maximum normal stress on a transverse section (a) through the center of the beam, (b) just to the left of D.

Chapter: 5 Problem: 5.147

Mechanics of Materials 7
Two cover plates, each \(\frac{5}{8}\)in. thick, are welded to a W30 X 99 beam as shown. Knowing that \(\sigma_\text{all} = 22 \text{ ksi}\) for both the beam and the plates, determine the required value of (a) the length of the plates, (b) the width of the plates.

Chapter: 5 Problem: 5.148

Mechanics of Materials 7
For the tapered beam shown, determine (a) the transverse section in which the maximum normal stress occurs, (b) the largest distributed load w that can be applied, knowing that \(\sigma_\text{all} = 22 \text{ MPa}\).

Chapter: 5 Problem: 5.149

Mechanics of Materials 7
For the tapered beam shown, knowing that w = 160 kN/m, determine (a) the transverse section in which the maximum normal stress occurs, (b) the corresponding value of the normal stress.

Chapter: 5 Problem: 5.150

Mechanics of Materials 7
For the tapered beam shown, determine (a) the transverse section in which the maximum normal stress occurs, (b) the largest distributed load w that can be applied, knowing that \(\sigma_\text{all} = 24 \text{ ksi}\).

Chapter: 5 Problem: 5.151

Mechanics of Materials 7
For the tapered beam shown, determine (a) the transverse section in which the maximum normal stress occurs, (b) the largest concentrated load P that can be applied, knowing that \(\sigma_\text{all} = 24 \text{ ksi}\).

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