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JEE Main 202120 JulyEvening Shift
Exam
JEE Main
Year
2021
Date
20 July
Shift
Evening Shift
Subject
Physics
Chapter
Rotational Motion

JEE Main 2021 · 20 July · Evening Shift · Physics · Rotational Motion

A body rolls down an inclined plane without slipping. The kinetic...

A body rolls down an inclined plane without slipping. The kinetic energy of rotation is 5050 % 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

12Iω2=12×12mv2\dfrac{1}{2}I{\omega}^{2} = \dfrac{1}{2} \times \dfrac{1}{2}m{v}^{2}

I=12mR2I = \dfrac{1}{2}m{R}^{2}

Body is solid cylinder.

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