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A solid sphere of mass 2 kg and radius 5...

A solid sphere of mass 2 kg and radius 5 cm is rotating at the rate of 300 rpm. The torque required to stop it in `2pi` revolutions is

A

2.5 x 10^4 dyne cm

B

2.5 x 10^(-4) dyne cm

C

2.5 x 10^6 dyne cm

D

2.5 x 10^5 dyne cm

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