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Consider a uniform disc of mass m, radiu...


Consider a uniform disc of mass `m`, radius `r` rolling without slipping on a rough surface with linear acceleration `a` and angular acceleration `alpha` due to an external force F as shown in the figure coefficient of friction is `mu`.
Q. The magnitude of frictional force acting on the disc is

A

`ma`

B

`mumg`

C

`(ma)/(2)`

D

zero

Text Solution

Verified by Experts

`alpha=(F.R)/((3)/(2)mR^(2))=(2F)/(3mR)`
`a=Ralpha=(2F)/(3m)`
`F-f=ma=(2F)/(3)`
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