Question

The angle between the resultant contact force and the normal force exerted by a body on the other is called the angle of friction. Show that, if  λ be the angle of friction and μ the coefficient of static friction, λ≤  tan^-1μ.

Answer 1

When F = μ  R, F is the limiting friction (max friction). When applied force increase, force of friction increase upto limiting friction (μ R) Before reaching limiting friction