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A long wire hangs vertically with its up...

A long wire hangs vertically with its upper end clamped, when a torque of 2 Nm is applied to the free end, it is twisted through an angle of `30^(@)`. Then the potential energy of the twisted wire is

A

`pi` joules

B

`pi//3` joules

C

`pi//6` joules

D

`pi//4 ` joules

Text Solution

Verified by Experts

The correct Answer is:
C
`W=(1)/(2) tau theta =(2 xx pi)/(2 xx 6) =(pi)/(6)J`
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