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When 'W' joule of work is done on a flyw...

When 'W' joule of work is done on a flywheel, its frequency of rotation increases from `n_(1)`. Hz to `n_(2)`. Hz The M.I. of the flywheel about its axis of rotation is given by

A

`(W)/(2pi^(2) (n_(2)^(2)-n_(1)^(2)))`

B

`(W)/(4pi^(2) (n_(2)^(2)+n_(1)^(2)))`

C

`(W)/(4pi^(2) (n_(2)^(2)-n_(1)^(2)))`

D

`(W)/(2pi^(2) (n_(2)^(2)+n_(1)^(2)))`

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The correct Answer is:
A
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