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A constant torque acting on a uniform ci...

A constant torque acting on a uniform circular wheel changes its angular momentum from `A_(0)` to `4 A_(0)` in `4` seconds. Find the magnitude of this torque.

A

0.75A

B

4A

C

A

D

12A

Text Solution

Verified by Experts

The correct Answer is:
A
`tau =(dL)/(dt)=(4A-A)/(4)=0.75 A`
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