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Define moment of inertia in terms of kinetic energy of rotation.

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Define moment of inertia in terms of kinetic energy of rotation.

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" The moment of inertia of a rigid-body about an axis of rotation is numerically equal to twice the kinetic energy of rotation of the body, when rotating with unit angular velocity about that axis.

I = 2(K.E.)

or, K.E. = 1/2 lω2.

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