AP EAMCET2008PhysicsLaws of Motion
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
Options
- A0.25
- B0.33
- C0.50
- D0.75
Correct answer
D. 0.75
Step-by-step solution
= [1- 1 n^2 ] Here, =45^ and n=2 aligned & = 45^ [1- 1 2^2 ] & =1- 1 4 = 3 4 =0.75 aligned