Question

When the elements of a pair are kept in contact by the action of external forces , the pair is said to be a?

Answer 1

Hey mate here is your answer

When the two elements of a pair are not connected mechanically but are kept in contact by the action of external forces, the pair is said to be a force-closed pair. The cam and follower is an example of force closed pair, as it is kept in contact by the forces exerted by spring and gravity.