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Get Full Access to Engineering Mechanics: Statics - 14 Edition - Chapter 4 - Problem 4-81
Get Full Access to Engineering Mechanics: Statics - 14 Edition - Chapter 4 - Problem 4-81

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# Solution: Two couples act on the frame. If d = 4 ft, ISBN: 9780133918922 126

## Solution for problem 4-81 Chapter 4

Engineering Mechanics: Statics | 14th Edition

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Problem 4-81

Two couples act on the frame. If d = 4 ft, determine the resultant couple moment. Compute the result by resolving each force into x and y components and (a) finding the moment of each couple (Eq. 413) and (b) summing the moments of all the force components about point B. 2 ft B A y 1 ft 3 ft 50 lb 80 lb 50 lb 30 30 5 4 3 80 lb 3 ft d x 5 4 3 Probs. 479/80/81

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13.155 InExample 13.15(no added infois requirefrom example 13.15 other thanthecam shape and the angular velocity (a)in termsof polar listebelow), determinethevelocityof the camfollowerwhen 0 = 1350 and eqns coordinatesand (b)interms of Cartesiancoordinates(justonvertyour answers to(a)using Fig3.8 aboveit in yourbook). The shape of the camis givenby r =0.15/(1+ 0.5cos0)where r isinmeters. The angular velocityof the arm iconstantand= 4 rad/seccounter-clockwise. 13.156 InExample 13.15,determine the acceleratiof thecam followerwhen 0 =1350 (a)interms ofpolar coordinatesand (b) in terms Cartesiancoordinates(justonvertyour answers to (a)using Fig3.8 and eqns above it inyo

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##### ISBN: 9780133918922

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