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A uniform disc of mass M and radius R is...

A uniform disc of mass `M` and radius `R` is mounted on an axle supported in frictionless bearings. A light cord is wrapped around the rim of the disc and a steady downward pull `T` is exerted on the cord. The angular acceleration of the disc is

A

`((T)/(MR))`

B

`((MR)/(T))`

C

`((2T)/(MR))`

D

`((MR)/(2T))`

Text Solution

Verified by Experts

The correct Answer is:
C
`TR=(MR^(2))/(2)alpha,alpha=((2T)/(MR))`
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