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A wheel has moment of inertia 5 xx 10^(-...

A wheel has moment of inertia `5 xx 10^(-3) kg m^(2)` and is making `20 "rev" s^(-1)`. The torque needed to stop it in `10 s` is….. `xx 10^(-2) N-m`

A

`2pi`

B

`2.5pi`

C

`4pi`

D

`4.5pi`

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