The angle between the resultant contact force and the normal force exerted by a body on the othe... VIDEO
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 \( \lambda \) be the angle of friction and \( \mu \) the coefficient of static friction, \( \lambda \leq \tan ^{-1} \mu \).
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