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Theory of Structures

Q1: A lift of weight W is lifted by a rope with an acceleration f. If the area of cross-section of the rope is A, the stress in the rope is

A

B

C

D

ANS:A -

Considering T as tension acting in rope,

we can write T-W=ma, T=W+ma.
Stress in rope =T/area.
Substituting relevant expressions, we get. W (f/g +1) /A.



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