Answered: The rigid horizontal bar AB is…

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

The rigid horizontal bar AB is supported by three vertical wires as shown in the figure and carries a load of 24,000 lb. The weight of AB is negligible and the system is stress free before the load is applied. After the load is applied, the temperature of all three wires is raised by 25°F. Find the stress in each wire as well as the location of the applied load in order that AB remains horizontal. For the steel wire take E=30x106 psi, α=6.5x10-6/°F, for the brass wire E=14x106 psi, α=10.4x10-6/°F, and for copper E=17x106 psi, α=9.3x10-6/°F.

Steel
Brass
Copper
A = 0.2 in?
L- 6 ft
A
0.5 in?
A
0.3 in?
...
L.
4 ft
L 5 ft
3'
2
A
B
24,000 1b

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