suppose a body of an ice skater has a moment of inertia 4 kgm2 and her arms have a mass 5 kg each with center of mass at 0.4 m from her body. she started to turn at 0.5 rev/sec on the point of her skete with her arms out stretched . She then pulled her arms inward so centered of mass is at axis of her body is zero. What is the speed of rotation?
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