A student stands on a freely rotating platform, as shown in Fig. 10-10. With his arms extended,
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A student stands on a freely rotating platform, as shown in Fig. 10-10. With his arms extended, his rotational frequency is 0.25 rev/s. But when he draws his arm in, that frequency becomes 0.80 rev/s. Find the ratio of his moment of inertia in the first case to that in the second.
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