System of Particles and Rotational Motion - Result Question 83
90. 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 the inclined plane, then
[1993]
(a) solid sphere reaches the bottom first
(b) solid sphere reaches the bottom last (c) disc will reach the bottom first
(d) all reach the bottom at the same time
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Answer:
Correct Answer: 90. (a)
Solution:
- (a) For solid sphere,
For disc and solid cylinder,
As
When bodies of different shapes are allowed to roll down an incline, then velocity at the bottom of incline, acceleration and time taken in reaching the bottom depends on
