A body takes 1(1/3) times as much time to slide down a rough inclined plane as it takes to slide down an identical bust smooth inclined plane. If the angle of inclination is 45°, find the coefficient of friction.

A body takes 1(1/3) times as much time to slide down a rough inclined

1.	A body takes 1(1/3) times as much time to slide down a rough inclined plane as it takes to slide down an identical bust smooth inclined plane. If the angle of inclination is 45°, find the coefficient of friction.
Answer» `1/16` `3/16` `5/16` `7/16x` ANSWER :D