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What is meant by coefficient of friction and angel of friction? Establish the relation between the two?

CLASS - XI PHYSICS (Laws of Motion)


A coefficient of friction is a value that shows the relationship between the force of friction between two objects and the normal force between the objects.
 The angle of a plane to the horizontal when a body placed on the plane will just start to slide. The tangent of the angle of friction is the coefficient of static friction.

Relation:The angle of friction is the angle between the normal force and the resultant of the normal and friction forces at limiting equilibrium. 
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