An angular impulse of \( 20 \mathrm{Nms} \) is applied to a hollow cylinder of mass \( 2 \mathrm...

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An angular impulse of \( 20 \mathrm{Nms} \) is applied to a hollow cylinder of mass \( 2 \mathrm{~kg} \) and radius \( 20 \mathrm{~cm} \). The change in its angular speed is
(1) \( 25 \mathrm{rad} / \mathrm{s} \)
(2) \( 2.5 \mathrm{rad} / \mathrm{s} \)
(3) \( 250 \mathrm{rad} / \mathrm{s} \)
(4) \( 2500 \mathrm{rad} / \mathrm{s} \)
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