A block of weight sits on a frictionless inclined plane, which makes an angle with respect to the horizontal, as shown. A force of magnitude , applied parallel to the incline, pulls the block up the plane at constant speed.
The block moves a distance up the incline. The block does not stop after moving this distance but continues to move with constant speed. What is the total work done on the block by all forces? (Include only the work done after the block has started moving, not the work needed to start the block moving from rest.)
What is , the work done on the block by the force of gravity as the block moves a distance up the incline?
What is , the work done on the block by the normal force as the block moves a distance up the inclined plane?