A man stands on a freely rotating platform with his arms extended, his rotational frequency is 0.25revls. But when he draws them in, his frequency is 0.80rev/s. Find the ratio of his moment of inertia in the first case to that in the second.
A. 3.2
B. 2.3
C. 4
D. 4.7
Answers: 1
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A man stands on a freely rotating platform with his arms extended, his rotational frequency is 0.25r...
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