Force of static friction_____on the nature and condition of the two surfaces in contact.

Force of friction arises due to_____of the irregularities of the two surfaces in contact.

What is static friction ?

Force of friction is a

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.

State two conditions of Interference.

What are laws of static friction, Find out an expression for coefficient friction of a body placed in an inclined plane ?

A chain lies on a rough horizontal table. It starts skidding when one fourth of it’s length hangs over the edge of the table. The coefficient of static friction between the chain and the surface of the table is

Name the basic forces in nature.

Define co-efficient of static friction and co-efficient of kinetic friction. Which of the two is lesser ?

The frictional force between two. surfaces is independent of