A body is rolling without slipping on a horizontal plane. The rotational energy of the body is 40% of the total kinetic energy. Identify the body.

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Ring

Hollow cylinder

Solid cylinder

Hollow sphere

answer is D.

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Detailed Solution

12Iω212Mv2=4060=23 or Iv2R2Mv2=23 or I=23MR2Clearly, the body is a hollow sphere.

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