AP EAMCET2002PhysicsLaws of Motion
A body is sliding down a rough inclined plane. The coefficient of friction between the body and the plane is 0.5 . The ratio of the net force required for the body to slide down and the normal reaction on the body is 1: 2 . Then the angle of the inclined plane is
Options
- A15^
- B30^
- C45^
- D60^
Correct answer
C. 45^
Step-by-step solution
=0.5, F R = 1 2 Net force acting downward =m g -f where, f= frictional force = R(R= Normal reaction )= m g F R = 1 2 aligned & m g - m g m g = 1 2 & - = 1 2 = 1 2 + &= 1 2 +0.5=1 & = 45 & =45^ aligned