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A disc of mass 16 kg and radius 25 cm is...

A disc of mass 16 kg and radius 25 cm is rotated about its axis. What torque will increase its angular velocity from 0 to `8pi rad/s in 8 s` ?

A

`pi Nm`

B

`Pi//2 Nm`

C

`pi//4 Nm`

D

`2pi//Nm`

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