A thin hoop and a solid sphere each have mass and roll without slipping at a speed of

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

Problem

A thin hoop (I=MR2)(I = M R^{2}) and a solid sphere (I=25MR2)(I = \tfrac{2}{5} M R^{2}) each have mass 2.0 kg2.0\,\text{kg} and roll without slipping at a speed of 3.0 m/s3.0\,\text{m/s}. For which object is more than one-half of its total kinetic energy rotational? (a) Only the hoop (b) Neither the hoop nor the sphere (c) Only the sphere (d) Both the hoop and the sphere

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