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One end of a uniform wire of length L an...

One end of a uniform wire of length L and of weight W is attached rigidly to a point in the roof and a weight `W_(1)` is suspended from its lower end. If S is the area of cross-section of the wire, the stress in the wire at a height 3 L/4 from its lower end is

A

`(W_(1))/(S)`

B

`(W_(1)+ (W//4))/(S)`

C

`(W_(1)+ (3U//4))/(S)`

D

`(W_(1)+ W)/(S)`

Text Solution

Verified by Experts

The correct Answer is:
C
Force at height `(3L)/(4)` from its lower end `= W_(1)+ (3W)/(4)`
Stress `= (W_(1)+ 3W//4)/(S)`
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