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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 `8 pi` rad/s in 8 s ?

A

`pi Nm`

B

`pi//2 Nm`

C

`pi//4 Nm`

D

`2pi Nm`

Text Solution

Verified by Experts

The correct Answer is:
B
`tau = (MR^(2))/(2)xx((omega_(2)-omega_(1)))/(t)`
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