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A grindstone of moment of inertia 6 kg m...

A grindstone of moment of inertia `6 kg m^(2)` is found to have a speed of `150` rpm, `10 sec`. After starting from rest. Torque applied is

A

`6 pi Ns`

B

`3 pi Ns`

C

`9 pi Ns`

D

`12 pi Ns`

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Verified by Experts

The correct Answer is:
B
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