A solid sphere, a hollow sphere and a disc, all having same mass … - Vidyadip

MCQ

A solid sphere, a hollow sphere and a disc, all having same mass and radius, are placed at the top of a smooth incline and released. Least time will be taken in reaching the bottom by:

A
The solid sphere.
B
The hollow sphere.
C
The disc.
✓
All will take same time.

✓

Answer

Correct option: D.

All will take same time.

Explanation:

The incline is smooth; therefore, all bodies will slip on the incline. Also, as the mass of bodies is same, they will reach the bottom in equal time.

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