Q. A solid sphere, disc and solid cylinder all of the same mass and made up of same material are allowed to roll down (from rest) on inclined plane, then
A) Solid sphere reaches the bottom first
B) Solid sphere reaches the bottom late
C) Disc will reach the bottom first
D) All of them reach the bottom at the same time
Explanation
(a) Because its M.I. (or value of $\frac{K^{2}}{R^{2}}$) is minimum for sphere
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.