1. The problem statement, all variables and given/known data A rope lifts a mass of 20kg vertically 80cm. How much work is done by the rope on the mass? How much work is done by gravity on the mass? 2. Relevant equations W = FΔd Eg = mgh 3. The attempt at a solution How much work is done by the rope on the mass? W = FΔd W = F(0.8) This is as far as I've gotten. I don't think this is the correct solution. For this to work, I would need to put the applied force of the rope. The problem is that I don't know the acceleration of the rope, so I'm thinking this may be the completely wrong approach. How much work is done by gravity on the mass? So far what I have is: W = FΔd W = mgΔd W = (20)(9.81)(0) W = 0 Because gravity doesn't move the mass, the work done by gravity is zero. I believe this is the correct solution.