A circular platform (uniform disk) of mass and radius rotates at

PHYSICS · Single correct · CBSE · Physics · System of Particles and Rotational Motion · System of Particles and Rotational Motion

Problem

A circular platform (uniform disk) of mass 5 kg5\,\text{kg} and radius 0.60 m0.60\,\text{m} rotates at 3.0 rad/s3.0\,\text{rad/s}. A 2.0 kg2.0\,\text{kg} block is fastened to the rim and rotates with the platform. To the nearest percent, what percentage of the system’s total angular momentum about the center is contributed by the block? (a) 57%57\% (b) 29%29\% (c) 44%44\% (d) 62%62\%

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