A given object takes times more time to slide down a rough inclined plane as it takes…

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

Problem

A given object takes

n

times more time to slide down a

45^\circ

rough inclined plane as it takes to slide down a perfectly smooth

45^\circ

incline. The coefficient of kinetic friction between the object and the incline is : [Main Online April 15, 2018] (1)

\sqrt{1 - \frac{1}{n^2}}

(2)

1 - \frac{1}{n^2}

(3)

\frac{1}{2 - n^2}

(4)

\sqrt{\frac{1}{1 - n^2}}