Medium MCQ +4 / -1 PYQ · JEE Mains 2021

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

  1. A Solid sphere
  2. B Solid cylinder Correct answer
  3. C Hollow cylinder
  4. D Ring

Solution

${1 \over 2}I{\omega ^2} = {1 \over 2} \times {1 \over 2}m{v^2}$<br><br>$I = {1 \over 2}m{R^2}$<br><br>Body is solid cylinder

About this question

Subject: Physics · Chapter: Rotational Motion · Topic: Centre of Mass

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