Question

what is the formula for finding friction​

Answer 1

f = \mu N

f = friction force

\mu = coefficient of friction

N = normal force

Answer 2

Explanation:

friction is the opposing forcce which tends to oppose the motion of a body there is no formula to find it but it has maximum limit that is uN where u is coefficient of friction and N is contact force or normal force if the value of force is less than uN than friction equal force.

uN=F that object is at rest if F>uN than body will move with net force equal to F-uN