Acceleration Of Block Against Friction MCQ - Practice Questions with Answers

• Case 1:- Acceleration of a block on a horizontal surface

• When the body is moving under application of force P, then kinetic friction opposes its motion.

              Let a is the net acceleration of the body.

           From the figure,

               ma = P - F_K

• Case 2:- Acceleration of a block sliding down over a rough inclined plane

• When the angle of the inclined plane is more than the angle of repose, the body placed on the inclined plane slides down with an acceleration a.

               From the figure,

For    

• Case 3:- Retardation of a block sliding up over a rough inclined plane

• When the angle of the inclined plane is less than the angle of repose, then for the upward motion

For