Home
Class 12
PHYSICS
A block B is pushed momentarily along a ...

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

`v/(gmu)`

B

`(gmu)/v`

C

`g/v`

D

`v/g`

Text Solution

Verified by Experts

The correct Answer is:
A
Promotional Banner

Similar Questions

Explore conceptually related problems

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 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 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 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 4.00g bullet travelling horizontally with a velocity of magnitude 500m//s is fired into a wooden block with a mass of 1.00kg , initially at rest on a level surface. The bullet passes through the block and emerges with speed 100m//s . The block slides a distance of 0.30m along the surface from its initial position. (a) What is the coefficient of kinetic friction between block and surface? (b) What is the decrease in kinetic energy of the bullet? (c) What is the kinetic energy of the block at the instant after the bullet has passed through it? Neglect friction during collision of bullet with the block.

Figure shows an irregular wedge of mass m placed on a smooth horizontal surface. Part BC is rough. If the coefficient of friction between the block and wedge is mu , and the block comes to rest with respect to wedge at a point E on the rough surface then BE will be