Question

A uniform disc of radius R is rotating about its axis with angular velocity mo and then it is gently
placed on a rough horizontal surface. After what time its rotational motion ceases (Take coefficien
of friction as u)
(A) 400R
400R
4ug
(C) POR
(D) 40000
3ug
3ug
ug​

Answer 1

Answer:

answer should be option (d}