A load is on inclined surface. If the inclination of the surface increases till the load just slides what happens to the coefficient of friction ?

What is nature of surface if coefficient friction is zero.

A block has been placed on an inclined plane. The slope angle of the plane is such that the block slides down the plane at a constant speed. The coefficient of kinetic friction is equal to

A mass of 4 kg rests on a horizontal plane. The plane is gradually inclined until an angle theta=15^@ with the horizontal and the mass begins to slide. What is the coefficient of static friction between the block and the surface ?

A body weighing 20 kg just slides down a rough plane that rises 5 in 12. What is the coefficient of friction?

A block placed on a horizontal surface is being pushed by a force F making an angle theta with the vertical. The coefficient of friction between the block and surface is mu The force required to slide down the block with uniform velocity on the floor is

A 50 gm box is placed on an inclined plane making an angle of 30^@ with the horizontal so that a gentle tapping causes the sliding of the box. Calculate the coefficient of static friction for the surfaces of the box and the inclined plane in contact.

What is the minimum force necessary to just slide a box of 150 kg mass on a rough horizontal surface of-coefficient of friction 0.1?

What is the maximum force necessary to just slide box of 150 kg mass on a rough horizontal surface of coefficient of friction 0.1 ?

A box of mass 25 kg starts from rest and slides down an inclined plane 8 meter long and 5 meter high. It is found to move at the bottom at 7 m/s. What is the force of friction

A block of mass 10 kg kept on a rough horizontal surface can be maintained in uniform motion in a straight line when the force of 50 N is applied to the body in the direction of it’s motion. Find the coefficient of kinetic friction between the surfaces.；