The angle of inclination of the plane at which the body begins to move down the plane, is called angle of friction.
The angle of inclination of the plane at which the body begins to move down the plane, is called angle of friction.
A body will begin to move down an inclined plane if the angle of inclination of the plane is greater than the angle of friction
Coefficient of friction depends upon nature of surface only, it is independent of area of contact.
The force required to move the body up the plane will be minimum if it makes an angle with the inclined plane equal to the angle of friction.
A ladder is resting on a smooth ground and leaning against a rough vertical wall. The force of friction will act upward at its upper end.