Answered: W2 = 660 N 1.2 m P = 300 N W = 4600 N 9…

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

An aluminum pole for a street light weighs
4600 N and supports an arm that weighs 660 N (see
figure). The center of gravity of the arm is 1.2 m from the
axis of the pole. A wind force of 300 N also acts in the (-y)
direction at 9 m above the base. The outside diameter of
the pole (at its base) is 225 mm, and its thickness is 18 mm.

Determine the maximum tensile and compressive
stresses σ_t and σ_c, respectively, in the pole (at its base)
due to the weights and the wind force.

W2 = 660 N
1.2 m
P = 300 N
W = 4600 N
9 m
18 mm
y
225 mm

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