Angle of Friction
Category : JEE Main & Advanced
Angle of friction may be defined as the angle which the resultant of limiting friction and normal reaction makes with the normal reaction.
By definition angle \[\theta \] is called the angle of friction
\[\tan \theta =\frac{{{F}_{l}}}{R}\]
\[\therefore \,\,\tan \theta ={{\mu }_{0}}\]
[As we know \[\frac{{{F}_{l}}}{R}={{\mu }_{s}}\] ]
or \[\theta ={{\tan }^{-1}}({{\mu }_{L}})\]
Hence coefficient of static friction is equal to tangent of the angle of friction.
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