A thin circular ring first slips down a smooth incline then rolls down a rough incline of identical geometry from same height. Ratio of time taken in the two motion is :

A solid sphere and a spherical shell roll down an incline from rest from same height. The ratio of times taken by them is

A solid sphere and a spherical shell roll down an incline from rest from same height. The ratio of times taken by them is

A solid cylinder is rolling down a rough inclined plane of inclination theta . Then

A solid cylinder is rolling down a rough inclined plane of inclination theta . Then

A thin circular ring rolls down a smooth inclined plane of inclination 30degree without slipping. What is it's linear acceleration in the plane ?

A sphere and circular disc of same mass and radius are allowed to roll down an inclined plane from the same height without slipping. Find the ratio of times taken by these two to come to the bottom of incline :