Problem: If a rotating skater triples her rate of rotation by decreasing her moment of inertia by 1/3, by what factor does her rotational kinetic energy change?

FREE Expert Solution

Rotational kinetic energy:

K.Erot=12Iω2

The ratio of initial to final rotational kinetic energy:

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Problem Details

If a rotating skater triples her rate of rotation by decreasing her moment of inertia by 1/3, by what factor does her rotational kinetic energy change?

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