Question

on which factor the force of friction depends​

Answer 1

Answer:

Friction depends upon the following two factors.  

1. Normal Reaction  

2. Nature, of Surfaces  

NORMAL REACTION

Force of friction is directly proportional to the normal reaction R which acts in upward' direction against the weight of the body sliding on a surface i.e.  

NATURE OF SURFACES

Force of friction also depends upon the nature of two surfaces in contact with each other, it is constant for various pairs of surfaces in contact and this value is called co-efficient of friction.