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

Consider a situation in which a ring, a solid cylinder and a solid sphere roll down on the same inclined plane without slipping. Assume that they start rolling from rest and having identical diameter.

The correct statement for this situation is

  1. A All of them will have same velocity.
  2. B The ring has greatest and the cylinder has the least velocity of the centre of mass at the bottom of the inclined plane.
  3. C The sphere has the greatest and the ring has the least velocity of the centre of mass at the bottom of the inclined plane. Correct answer
  4. D The cylinder has the greatest and the sphere has the least velocity of the centre of mass at the bottom of the inclined plane.

Solution

${{{K_T}} \over {{K_R}}} = {{M{R^2}} \over {{I_{CM}}}}$<br><br>I<sub>CM</sub> is maximum for ring.<br><br>$\Rightarrow$ v is least for ring.

About this question

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

This question is part of PrepWiser's free JEE Main question bank. 158 more solved questions on Rotational Motion are available — start with the harder ones if your accuracy is >70%.

Drill 25 more like these. Every day. Free.

PrepWiser turns these solved questions into a daily practice loop. Chapter-wise drills, full mocks, AI doubt chat. No auto-renew.

Start free →