A hoop of radius r weighs m kg. It rolls along a horizontal floor so that its centre of mass has a speed of v m/s. How much work has to be done to stop it?

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 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 ?

The mass of a hoop of radius 0.30 m is 2kg. It rolls along a horizontal floor so that its centre of mass has a speed of 2 m/s. What is the work 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 radius R and mass m is projected on to a horizontal floor with a backward spin such that its centre of mass speed is v_(0) and angular velocity is omega_(0) . What must be the minimum value of omega_(0) so that the disc eventually returns back?

A uniform sphere of mass 500 g rolls without slipping on a plane surface so that its centre moves at a speed of 0.02 m//s . The total kinetic energy of rolling sphere would be (in J )

A disc of radius r rolls without slipping on a rough horizontal floor. If veloocity of its centre of mass is v_(0) , then velocity of point P, as shown in the figure (OP=r // 2 and angleQOP=60^(@) )is

A cylinder rolls on a horizontal plane surface. If the speed of the centre is 25 m/s, what is the speed of the highest point?

A flywheel of moment of inertia 10kg m^(2) is rotating at 50 rad//s . It must be brought to stop in 10 s . (a) How much work must be done to stop it? (b) What is the required average power?

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