1. The problem statement, all variables and given/known data I decide to use electric charges to move a 1000 kg box up a 30 degree frictionless ramp. I decide to put equal and opposite charges on the box and at the top of the 5.9 meter ramp. Basically there is a right triangle with a box at the bottom with +q written next to it. The hypotenuse os 5.0 meters and the base angle where the box is standing is 30 degrees. At the top, it says -q a) what magnitude charges do you need to keep the box from moving? b) what is the initial energy of the box. c) How much work does it take to separate the two charges from the 5.0 m apart to infinity? d) how much work does it take to push the piano up by hand? 2. Relevant equations PE=qV F=kQ1Q2/r^2 (Coulumb's Law) k = 9*10^9 Nm^2/C^2 3. The attempt at a solution I think that you have to use cosine/sine somewhere. Also, energy is conserved so that probably has something to do with it.