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When 200 J of work is done on a fly whee...

When `200 J` of work is done on a fly wheel its frequency of rotation increase from `4Hz` to `9 Hz`. The `M.I.` of the wheel about the axis of rotations is nearly

A

`0.12 kgm^(2)`

B

`0.2 kgm^(2)`

C

`0.22 kgm^(2)`

D

`0.3 kgm^(2)`

Text Solution

Verified by Experts

The correct Answer is:
A
`W=1/2I4pi^(2)(n_(2)^(2)-n_(1)^(2))`
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