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Question: A constant torque acting on a uniform circular wheel changes its angular momentum from A<sub>0</sub>...

A constant torque acting on a uniform circular wheel changes its angular momentum from A0 to 4A0 in 4 seconds. The magnitude of this torque is

A

3A0/4

B

A0

C

4A0

D

12A0

Answer

3A0/4

Explanation

Solution

t = dJdt\frac{dJ}{dt} = Jf–Jidt\frac{J_{f}–J_{i}}{dt}