Question

If angle of repose is ${30}^o$, then coefficient of friction will be

• A. $1$
• B. $15$
• C. $\frac{1}{\sqrt{3}}$
• D. $\frac{\sqrt{3}}{2}$

Answer 1

The correct option is C $\frac{1}{\sqrt{3}}$

$\mu =tan\theta =tan30=\frac{1}{\sqrt{3}}$