Friction Laws Of Friction Laws Of Motion
Laws Of Friction
Friction is directly proportionate to Normal Force. The law of static friction may thus be written as fs
Coeficient of limiting Friction depends on nature of two surface in contact and it is indepenedent on area of contact.
Coeficient of kinetic Friction
It is independent on velocity of body.
Coeficient of rolling Friction
Rolling Friction depends on area of the surface in contact.
Angle of friction : Angle made by resultant of f and N with the normal reaction force is called angle of friction.
Friction is parallel component of contact force to the surfaces.
Normal force is perpendicular component of contact force to the surfaces.
Motion on a horizontal surface.
Consider a block of mass m place on a horizontal surface with Normal Recation N.
Case 1: If applied force F = 0 then Force of Friction is Zero.