Physics

We are given:

Mass of the block, ,

Angle of the incline, ,

Distance moved, ,

Coefficient of kinetic friction, ,

Gravitational acceleration, .

 

Since the block is moving at a constant speed, the net force in the direction of motion is zero. The applied force must balance the forces due to friction and the component of gravity acting down the incline.

 

The component of the gravitational force acting down the incline is:

 

Calculate the normal force

The normal force is the perpendicular force exerted by the surface on the block. It is given by: