1. The problem statement, all variables and given/known data A chain of metal links with total mass M = 6 kg is coiled up in a tight ball on a low-friction table. You pull on a link at one end of the chain with a constant force F = 69 N. Eventually the chain straightens out to its full length L = 1.0 m, and you keep pulling until you have pulled your end of the chain a total distance d = 3.6 m. before this question i have already answered these questions. might need the info to solve not sure though. (a) Consider the point particle system: What is the speed of the chain at this instant? 8.4439 m/s Consider the real system: What is the change in energy of the chain? delta(E) = 248.4 joules 3. The attempt at a solution i solved conservation of energy like Ef = Ei + W + Q then Ef = 248.4 + Q where Q = 0 then final Ke + Ethermal = 248.4 solved for Ethermal = 248.4 / Ke or 248.4/(1/2mv^2) using v found above i get 1.1613 J but that is wrong. where did i mess up??