The static friction
* bears a constant ratio to the normal reaction between the two surfaces
* is independent of the area of contact, between the two surfaces
* always acts in a direction, opposite to that in which the body tends to move
The static friction
* bears a constant ratio to the normal reaction between the two surfaces
* is independent of the area of contact, between the two surfaces
* always acts in a direction, opposite to that in which the body tends to move
Static Friction The friction experienced by a body, when it is at rest is known as static friction.
Dynamic Friction The friction experienced by a body, when it is in motion is called dynamic friction. Dynamic friction is also called as kinetic friction.
Dynamic friction always less than static friction.
The ratio of static friction to dynamic friction is always greater than one.
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.