A solid sphere, disc and solid cylinder all of the same mass and made of the same material are allowed to…

A solid sphere, disc and solid cylinder all of the same mass and made of the same material are allowed to roll down (from rest) on an inclined
plane, then
  1. solid sphere reaches the bottom first
  2. solid sphere reaches the bottom last
  3. disc will reach the bottom first
  4. all reach the bottom at the same time

Solution

If a solid sphere, disc, and solid cylinder of the same mass and material are allowed to roll moment of inertia, which means its angular acceleration will be the highest, and it will roll faster. *

Asked in: JEE Mains - Rotational Motion - Test 4

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