Question

what is the analogue of mass in rotational motion derive the expression for the kinetic energy of a rotating body​

Answer 1

Hi friend here is your answer

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The analogue of mass is Moment of Inertia


suppose a rigid body rotating with constant angular velocity w about a rotational axis

Consider body made up of N no of particles masses m1, m2, m3............ mN situated at the distance r1, r2............ rN


For further derivation refer to the attachment

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Hope it helps you........!!
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