1. The problem statement, all variables and given/known data Consider a chain of total mass M = 5kg that is coiled into a tight ball on a low friction floor(like an ideal ice rink). You pull on a link at one end with a constant horizontal force F=20 N, just until it reaches its full length L = 3 m. What is the final velocity of the chain? (Hint: consider the point particle system. Make reasonable assumptions, like treating the coiled ball as if it has negligible size.) 2. Relevant equations Im pretty sure this involved the Energy Principle so delta_E = Wext + Q the enlongated chain is 3 meters, with the center of mass having moved 1.5 m I wish I had more to go on, but I just need a bump in the right direction. 3. The attempt at a solution ah, well thats kindof in section 2. although its only a feable attempt to solve it, its as far as I can get right now.