The moment of inertia of a body about a ...

The moment of inertia of a body about a given axis is `1.2 kg m^(2)`. Initially, the body is at rest. In order to produce a rotational `KE` of `1500 J`, for how much duration, an acceleration of `25 rad s^(-2)` must be applied about that axis ?

`4 sec`

`2 sec`

`8 sec`

`10 sec`

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