1. The problem statement, all variables and given/known data You slowly lift a box of books from the floor and put it on a table. Earth's gravity exerts a force, magnitude mg, downward, and you exert a force, magnitude mg, upward. the two forces have equal magnitudes and opposite directions. It appears that no work is done, but you know you did work. Explain what work is done. 2. Relevant equations 3. The attempt at a solution I don't get why its saying there was no work done. If work is force times distance. Then you exerted a force and moved the box. Does the force of gravity pulling down cancel out your force lifting it up.