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MHT CET Physics question

PhysicsOscillationsMHT CET

A circular disc has a tiny hole in it, at a distance from its centre. Its mass is and radius (). A horizontal shaft is passed through the hole and held fixed so that the disc can freely swing in the vertical plane. For small disturbance, the disc performs S.H.M. whose time period is minimum for

Answer: (C)

Solution

and minimising gives ,

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Question ID VK-068194