what is contact force class 8

Contact force is a type of force that can be applied only when two objects are in contact with each other. The force acts on a point of direct contact between the two objects and can either be continuous or momentary in the form of an impulse. Contact force is responsible for most of the interactions we experience in daily life, such as pushing a car up a hill, writing with a pen, or picking up a textbook from a table. Examples of contact force include muscular force, frictional force, tension force, and normal force. Contact force is governed by Newtons Laws.