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A 12-kg box slides up a 26.56° frictionless ramp at a constant speed as shown in the animation (position is given in meters and time is given in seconds). Note that both gravity and the hand do work on the box. Restart.

1. What is the work done on the box by the external force (hand) during the animation?
2. What is the work done on the box by gravity during the animation?
3. What is the total work done on the box during the animation?