Question

A box is lying on an inclined plane, what is the coefficient of static friction if the box starts sliding when an angle of inclination is ${60}^o$

• A. 1.173
• B. 1.732
• C. 2.732
• D. 1.677

Answer 1

The correct option is B 1.732

$\mu =\tan \left(angleofrepose\right)$

$=\tan \left({60}^{\circ }\right)$

$=1.732$