A ballet dancer spins about a vertical axis at 90 r.p.m. with arms outstretched. With the arms folded, the moment of inertia about the same axis of rotation changes by 75 %. Calculate the new speed of rotation.
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A ballet dancer spins about a vertical axis at 90 r.p.m. with arms outstretched. With the arms folded, the moment of inertia about the same axis of rotation changes by 75 %. Calculate the new speed of rotation.
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