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Question

A thin circular ring of mass M and radius r​ is rotating about its axis with constant angular velocity omega. Two objects each of mass m are attached gently to the opposite ends of a diameter of the ring. The ring now rotates with angular velocity?

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Solution

Dear Student,

I1ω1=I2ω2 ............ 1I1=MR2 ................... 2and I2=MR2+2mR2 ................... 3from 1, 2 and 3, we get,ω2=I1I2ωω2=MR2MR2+2mR2×ωω2=M+2m

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