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MHT CET Physics question

PhysicsSystems of Particles and Rotational MotionMHT CET

Bodies of regular geometrical shape were allowed to roll on a horizontal surface. It was found that for one rolling body translational KE was equal to rotational KE, the body must be

Answer: (D)

Solution

Equal energies need (1/2)mv² = (1/2)(mk²)ω² with v = R ω, so k = R, which holds only for a thin ring; for a

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Question ID VK-040760