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Moment of inertia of a disc is 100 g.cm^...

Moment of inertia of a disc is 100 g.`cm^(2)`. If the disc rotates with an angular velocity of 2 rad `.s^(-1)` the rotational kinetic energy of the disc is

A

100 erg

B

200 erg

C

400 erg

D

50 erg

Text Solution

Verified by Experts

The correct Answer is:
B
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