JEE MainPhysicsModerateRigid Body Dynamics

Two men of equal masses stand at opposite ends of the diameter of
a turntable disc of a certain mass, moving with some angular velocity.
The two men start moving towards the center of the turntable atequal
rates. Then choose the correct option

Show answer and solution

I_{1}\omega_{1} = I_{2}\omega_{2}

Since, men move towards middle of turn table Ι decreases hence

\omega_{2}

increases.

\therefore

KE = \frac{L^{2}}{2I};L =

constant and I decreases so KE
increases

Source: Grass-G / P-07 Physics paper 17 October.docx

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