Coefficient of Friction
Category : JEE Main & Advanced
When one body is in limiting equilibrium in contact with another body, the constant ratio which the limiting force of friction bears to normal reaction at their point of contact, is called the coefficient of friction and it is generally denoted by \[\mu \].
Thus, \[\mu \] is the ratio of the limiting friction and normal reaction.
Hence, \[\mu =\tan \lambda =\frac{\text{Maximum force of friction}}{\text{Normal reaction}}\]
\[\Rightarrow \mu =\frac{F}{R}\Rightarrow F=\mu R,\] where F is the limiting friction and R is the normal reaction.
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