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Engineering and Tech / Mechanics of Materials 7 / Chapter 2 / Problem 2.13

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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Rod BD is made of steel (E = 29 3 10 psi) and is used to

Chapter 2, Problem 2.13

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QUESTION:

Rod BD is made of steel \(\left(E=29 \times 10^{6} \mathrm{psi}\right)\) and is used to brace the axially compressed member ABC. The maximum force that can be developed in member BD is 0.02P. If the stress must not exceed 18 ksi and the maximum change in length of BD must not exceed 0.001 times the length of ABC, determine the smallest-diameter rod that can be used for member BD.

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QUESTION:

Rod BD is made of steel \(\left(E=29 \times 10^{6} \mathrm{psi}\right)\) and is used to brace the axially compressed member ABC. The maximum force that can be developed in member BD is 0.02P. If the stress must not exceed 18 ksi and the maximum change in length of BD must not exceed 0.001 times the length of ABC, determine the smallest-diameter rod that can be used for member BD.

ANSWER:

Step 1 of 3

The maximum force that can be developed in member BD is 0.02P

Considering stress,

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