Question

The coefficient of friction $\mu$ and the angle of friction $\lambda$ are related as

• A. $\sin \lambda =\mu$
• B. $\cos \lambda =\mu$
• C. $\tan \lambda =\mu$
• D. $\tan \mu =\lambda$

Answer 1

The correct option is C $\tan \lambda =\mu$

Angle of friction is the angle mad between resultant force applied by ground on body with vertical

therefore

$tan\lambda =\frac{f}{N}$

$tan\lambda =\mu$