Question

A body of mass 100 g is sliding from an inclined plane of inclination ${30}^0$. What is the frictional force experienced if $\mu =0.7$?

• A. $0.35\times \sqrt{3}$
• B. $\frac{1}{2}$
• C. $\frac{\sqrt{3}}{2}$
• D. 0.35

Answer 1

The correct option is A $0.35\times \sqrt{3}$

Frictional force force, $F_{fr}=\mu mg\cos \theta =0.7\times 0.1\times 10\times \frac{\sqrt{3}}{2}=0.35\times \sqrt{3}$