Question

explain why frictional force is said to be contact force​

Answer 1

Answer:

Frictional forces are called contact forces because - they opposes the motion of a body and to oppose the motion a contact between them must be there. Secondly- they acts upon two surfaces .

Answer 2

Answer:

The force which always opposes the motion of one body over another body frictional force. It acts between the two surfaces which are in contact with each other. ... Since frictional force arises when the surface of two objects are in touch with each other ,therefore, frictional force is an example of contact force.

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