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MHT CET Physics question

PhysicsSystems of Particles and Rotational MotionMHT CET

Two wheels of radii 10 cm and 30 cm are connected to each other by a belt. What is the ratio of the moment of inertia of the larger wheel to that of the smaller wheel, when both of them have the same angular momentum?

Answer: (B)

Solution

The belt gives equal rim speeds, so ω_small/ω_large = 30/10 = 3; with I1 ω1 = I2 ω2,

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Question ID VK-040767