Question

A rotating body with moment of inertia 6 x 10 kg m has a kinetic energy 12 The angular momentum of the body is
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Answer 1

A rotating object also has kinetic energy. When an object is rotating about its center of mass, its rotational kinetic energy is K = ½Iω2. Rotational kinetic energy = ½ moment of inertia * (angular speed)2. When the angular velocity of a spinning wheel doubles, its kinetic energy increases by a factor of four.