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The angular momentum of a wheel changes ...

The angular momentum of a wheel changes from 2L to 5L in 3 seconds. What will be the magnitude of torque acting on it?

A

L

B

`(L)/(2)`

C

`(L)/(3)`

D

`(L)/(5)`

Text Solution

Verified by Experts

The correct Answer is:
A
Torque = `(DeltaL)/(Deltat)`
`=(L_(2)-L_(1))/(Deltat)`
`=(5L-2L)/(3)`
`=(3L)/(3)`
`therefore` Torque = L (J)
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