Question

wht is meant by term contact force​

Answer 1

A contact force is any force that requires contact to occur. ... Contact forces are often decomposed into orthogonal components, one perpendicular to the surface(s) in contact called the normal force, and one parallel to the surface(s) in contact, called the friction force.

Answer 2

Any force which comes to action only when two or more objects are in contact is known as contact force.