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Two solid discs of radii r and 2r roll f...

Two solid discs of radii `r` and `2r` roll from the top of an inclined plane without slipping. Then

A

The bigger disc will reach the horizontal level first

B

The smaller disc will reach the horizontal level first

C

The time difference of reaching of the discs at the horizontal level will depend on the inclination of the plane

D

Both the discs will reach at the same time

Text Solution

Verified by Experts

The correct Answer is:
D
`t= (1)/(sin theta) sqrt((2h)/(g) (1+ (K^(2))/(R^(2))))`
`(K^(2))/(R^(2))` is same for both disc, hence both the disc will reach at the same time.
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