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If there a change in the angular momentu...

If there a change in the angular momentum of a body from `"5 kg-m"^(2)//s` to `"8 kg-m"^(2)//s` in 4 seconds, then the torque acting on the body is

A

`1N-m`

B

`(3)/(4)N-m`

C

`(1)/(2)N-m`

D

`2N-m`

Text Solution

Verified by Experts

The correct Answer is:
B
`tau=(dL)/(dt)=(8-5)/(4)=(3)/(4)N-m`
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