Answered: 9.0 in. 9.0 in. d = 0.5 in. P = 25 lb…

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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Question

While removing a wheel to change a tire, a driver applies forces P = 25 lb at the ends of
two of the arms of a lug wrench (see figure). The wrench is made of steel with shear
modulus of elasticity G = 11.4 x 10
6 psi. Each arm of the wrench is 9.0 in. long and has
a solid circular cross section of diameter d = 0.5 in.
a. Determine the maximum shear stress in the arm that is turning the lug nut (arm
A).
Determine the angle of twist (in degrees) of this same arm.

9.0 in.
9.0 in.
d = 0.5 in.
P = 25 lb
PROBLEM 3.3-7

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