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JEE Main202120 Jul 2021Evening ShiftPhysicsRotational MotionActual

A body rolls down an inclined plane without slipping. The kinetic energy of rotation is 50 % of its translational kinetic energy. The body is:

Options

  1. Asolid sphere
  2. Bsolid cylinder
  3. Chollow cylinder
  4. Dring

Correct answer

B. solid cylinder

Step-by-step solution

1 2 I ω 2 = 1 2 × 1 2 m v 2 I = 1 2   m R 2 Body is solid cylinder.

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