Question

A metal disc of radius `R` and mass `M` freely rolls down from the top of an inclined plane of height `h` without slipping. The speed of its centre of mass on reaching the bottom of the inclined plane is
A. `sqrt((4 gh)/3)`
B. `sqrt((3gh)/4)`
C. `sqrt(gh)`
D. `sqrt((gh)/2)`

Answer 1

Correct Answer - A
`v=sqrt((2glsin theta)/(1+(k^(2))/(R^(2))))`