Download the app

Questions  

Starting from rest, the time taken by a body sliding down on a rough inclined plane at 45° with the horizontal is, twice the time taken to travel on a smooth plane of same inclination and same distance. Then the coefficient of kinetic friction is

a
0.25
b
0.33
c
0.50
d
0.75

detailed solution

Correct option is D

tr=2lgsin⁡θ−μkcos⁡θ;ts=2lgsin⁡θ

Talk to our academic expert!

+91

Are you a Sri Chaitanya student?


Similar Questions

A skier starts from rest at point A and slides down the hill without turning or breaking. The friction coefficient is μ. When he stops at point B, his horizontal displacement is s. What is the height difference between points A and B

(The velocity of the skier is small, so that the additional pressure on the snow due to the curvature
can be neglected. Neglect also the friction of air and the dependence of μ on the velocity of the skier.) 


phone icon
whats app icon