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A solid cylinder of mass 2 kg and radius...

A solid cylinder of mass 2 kg and radius 4 cm rotating about its axis at the rate of 3 rpm. The torque required to stop after `2pi` revolutions is :

A

`2xx10^(-6)Nm`

B

`2xx10^(-3)Nm`

C

`12xx10^(-4)Nm`

D

`12xx10^(6)Nm`

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