# The co effient of friction is equal to

1
by avulalahari200
anything else given?
anything else?

2014-10-25T11:45:00+05:30

### This Is a Certified Answer

Certified answers contain reliable, trustworthy information vouched for by a hand-picked team of experts. Brainly has millions of high quality answers, all of them carefully moderated by our most trusted community members, but certified answers are the finest of the finest.
The friction force is a contact force that opposes the relative movement between two surfaces in contact. It depends on the nature (rough or smooth) of the two surfaces and the normal action or reaction force N of one body on the surface of another.

Friction force = Ff = μ N (= μ * weight of the body )

Coefficient of friction = ratio between the normal force and the force of friction. Ff is just equal to the force required to move the body on a surface.

Coefficient of friction μ
= Force needed to just move an object Ff / Normal reaction force R

It is always between 0 (smooth surface) and 1 (totally rough surface).