Question

State two factors which directly affect the force of friction.

Answer 1

The two factors affecting the force of friction are:

1. The smoothness of surface: Higher the roughness of surfaces in contact with each other, greater is the friction between bodies. Force of friction will be less between smooth surfaces.
2. Weight of the moving body on the surface: Greater the weight of the moving body on the surface, more is the force of friction on the body by the surface.