The kinetic energy of a rolling solid cylinder of mass `4kg` about it axis of rotation is `20kgm^(2)s^(-2)`. Calculate the velocity with which it is moving.

Explanation

M.l. of solid cylinder `= (1)/(2)MR^(2), K = (1)/(sqrt(2))R`
`V_(cm)=sqrt((2xx20)/(4(1+(1)/(2))))=sqrt((2xx20xx2)/(4xx3))=sqrt((20)/(3))m//s`
Hint : `V_(cm)=sqrt((2K.E.)/(m(1+(k^(2))/(R^(2)))))`