Q. The coefficient of limiting friction $\mu$ is defined as
A) $\mu = \frac{R}{F}$
B) $\mu = \sqrt{\frac{F}{R}}$
C) $\mu = \frac{F}{R}$
D) $\mu = \sqrt{\frac{R}{F}}$
Explanation
(c) The friction force
$F = \mu\ R$
Here, R = Normal reaction
So, the coefficient of limiting friction
$\mu = \frac{F}{R}$
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.