A hoop of radius `2 m` weight `100 kg`.It rolls along a horizontal floor so that its centre of mass has a speed of `20 cm s^-1`. How much work has to be done to stop it ?

A hoop of radius 2m, weight 100 kg. It rolls along horizontal floor so that its center of mass has a speed of 20 cm/s . How much work has to be done to stop it?

A hoop of radius 3m weighs 150 kg. It rolls along a horizontal floor so that its center of mass has a speed of 15cm//sec . How much work has to be done to stop it? ltbrlt [Hint : A hoop is a ring]

A loop of radius 3 meter and weighs 150kg . It rolls along a horizontal floor so that its centre of mass has a speed of 15 cm//sec . How much work has to be done to stop it -

A hoop ofradius r weights m kg. It rolls-without sliding along a horizontal floor so that its centre of mass has a speed v m/s How much work has to be done to stop it?

A disc of radius 2 m and mass 100kg rolls on a horizontal floor, its centre of mass has speed of 20 cm//s . How much work is needed to stop it ?

A disc of mass 4 kg and of radius 1 m rolls on a horizontal surface without slipping such that the velocity of its centre of mass is 10" cm sec"^(-1) , Its rotatonal kinetic energy is