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A wire elongates by l mm when a load W i...

A wire elongates by l mm when a load W is hanged from it. If the wire goes over a pulley and two weights W each are hung at the two ends, the elongation of the wire will be (in mm)

A

l

B

2l

C

zero

D

`(l)/(2)`

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The correct Answer is:
A
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ALLEN-ELASTICITY, SURFACE TENSION AND FLUID MECHANICS-Exercise 5 A (Previous year Questions)
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