A body takes time to reach the bottom of a smooth inclined plane at angle with the…

PHYSICS · Single correct · CBSE · Physics · Laws of Motion · Laws of Motion

Problem

A body takes time

t

to reach the bottom of a smooth inclined plane at angle

\theta

with the horizontal. If the plane is made rough, the time taken is

2t

. The coefficient of friction of the rough surface is (1)

\frac{3}{4}\tan\theta

(2)

\frac{2}{3}\tan\theta

(3)

\frac{1}{4}\tan\theta

(4)

\frac{1}{2}\tan\theta