A block `B` is pushed momentarily along a horizontal surface with an initial velocity `v` . If mu is the coefficient of sliding friction between `B` and the surface, block `B` will come to rest after a time:

A rectangular block is kept on a rough horizontal surface and given some initial velocity. The coefficient of friction between the block and the surface is constant. The block will topple

A block begins to move on a rough horizontal surface with an initial velocity u. If it loses of its initial kinetic energy in time t, the coefficient of kinetic friction between the block and the surface is

A body is moving along a rough horizontal surface with an initial velocity 6m/s m If the body comes to rest after travelling 9 m , then the coefficient of sliding friction will be

A block of mass 2 kg is given a push for a moment horizontally and then the block starts sliding over a horizontal plane. The graph shows the velocity - time of the motion. The co - efficient of sliding friction between the plane and the block is :

A wooden block of mass M resting on a rough horizontal surface is pulled with a force F at an angle  with the horizontal. If  is the coefficient of kinetic friction between the block and the surface, then acceleration of the block is -

A varying horizental force F = at act on a block of mass m kept on a smooth horizontal surface An identical block is kept on the first block.The coefficient of friction between the blocks is mu . The time after which the relative sliding between the blocks prevails is

A block of mass M is using on a rough horizontal surface. mu_R is the coefficient of kinetic friction between the block and the surface. What is the net force exerted by the surface on the block?

A block of mass m lying on a rough horizontal surface of friction coefficient mu is pulled by a force F as shown , the limiting friction between the block and surface will be

Asseration : A block of mass m starts moving on a rough horizontal surface with a velocity v. It stops due to friction between the block and the surface after moving through a ceratin distance. The surface is now tilted to an angle of 30^@ with the horizontal and same block is made to go up on the surface with the same initial velocity v. The decrease in the mechanical energy in the second situation is small than the first situation. Reason : The coefficient of friction between the block and the surface decreases with the increase in the angle of inclination.