A circular platform is mounted on a frictionless vertical axle. Its radius R - 2m and its moment of inertia about the axle is 200 kgm2. It is initially at rest. A 50kg man stands on the edge of the platform and begins to walk along the edge at the speed of 1ms-1 relative to the ground. Time taken by the man to complete one revolution is [CBSE PMT (Mains) 2012] (a) (b) J. π (c) 2rs 2

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#19 | Angular Momentum

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Angular momentum
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