A ballet student with her arms and a leg extended spins with an initial rotational speed of
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Question:
A ballet student with her arms and a leg extended spins with an initial rotational speed of 2.0 rev/s. As she draws her arms and leg in toward her body, her rotational inertia becomes 0.80 kgm2 and her rotational velocity is 5.0 rev/s. Determine her initial rotational inertia.
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