A body of mass 2kg slides down a curved track which is quadrant of a circle of radius 1 metre . All the surfaces are frictionless. If the body starts from rest, its speed at the bottom of the track is

A body slides down a fixed curved track that is one quadrant of a circle of radius R , as in the figure. If there is no friction and the body starts from rest, its speed at the bottom of the track is

A block of mass 1 slides down a curved track that is one quadrant of a circle of radius 1m. Its speed at the bottom is 2m/s. The work done by frictional force is:

A block of mass 1kg slides down a curved track which forms one quadrant of a circle of radius 1m as shown in figure. The speed of block at the bottom of track is v=2 ms^(-1) . The work done by the of friction is .

A block of mass 1kg slides down a curved track which forms one quadrant of a circle of radius 1m as shown in figure. The speed of block at the bottom of track is v=2 ms^(-1) . The work done by the of friction is .

A block of mass 1 kg slides down a vertical curved track that is one quadrant of a circle of radius 1m. Its speed ast the the bottom si 2 m//s . The work done by frictional force is :

A block of mass 1 kg slides down a vertical curved track that is one quadrant of a circle of radius 1m. Its speed ast the the bottom si 2 m//s . The work done by frictional force is :

A small body of mass m slides down from the top of a hemisphere of radius r . The surface of block and hemisphere are frictionless. The height at which the body lose contact with the surface of the sphere is