Question

on the basis of interaction what are the two categories of forces?

Answer 1

on the basis of interaction there are two categories of forces

Contact forces - the force occur when two objects are in contact.
example- Normal reaction, friction

Non contact force- interaction of two objects which are not in contact
not require to make contact

example- gravitational, magnetic electrostatic etc.

Answer 2

Basically, there are two types of forces, contact forces, and non contact forces. Gravitational forces, electric forces, magnetic forces, nuclear forces, frictional forces are some examples of forces.