The moment of inertia of a body (initially at rest) about a given axis is \( 1.2 \mathrm{~kg}-\m...

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The moment of inertia of a body (initially at rest) about a given axis is \( 1.2 \mathrm{~kg}-\mathrm{m}^{2} \). In order to produce a rotational kinetic energy of \( 1500 \mathrm{~J} \), an angular acceleration of \( 25 \mathrm{rad}-s^{2} \) must be applied about that axis for a period of
(A) \( 1 \mathrm{~s} \)
(B) \( 2 \mathrm{~s} \)
(C) \( 4 \mathrm{~s} \)
(D) \( 10 \mathrm{~s} \)
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