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The kinetic energy of uniformly rotating...

The kinetic energy of uniformly rotating disc is 31.56 J. calculate its M.I. If it performs 120 rotations per minute.

A

`0.2kgm62`

B

`0.4 kgm^2`

C

`0.6 kgm^2`

D

None

Text Solution

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The correct Answer is:
B
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