Question

What are the factors that affect friction?

Answer 1

Coefficient of friction and mass of object. 

Coefficient of friction can be static friction or moving friction depending id object is at rest or already moving, and it depends on the roughness of the objects surface as it rubs another surface. It also involves if there are forces of attraction between the two surfaces and all of these are taken as coefficient of friction. 

Technically it is not the mass of the object per se which determines the final force required to counteract friction, it is the force perpendicular to the two surfaces in shearing.

Answer 2

Answer:

The frictional force between two bodies depends mainly on three factors: (I) the adhesion between body surfaces (ii) roughness of the surface (iii) deformation of bodies.