1. The problem statement, all variables and given/known data A 65 kg climber finds himself dangling over the edge of an ice cliff, as shown in the figure below. Fortunately, he's roped to a 940 kg rock located 51 m from the edge of the cliff. Assume that the coefficient of kinetic friction between rock and ice is 5.7×10−2. What is his acceleration, and how much time does he have before the rock goes over the edge? Neglect the rope's mass. 2. Relevant equations Rock FT - Ff = massrock * a N = massrock * g Climber FT - massclimber * g = massclimber * a 3. The attempt at a solution I solved for FT for the climber and then stuck this equation into FT in the rock equation. Then solved for a. a = (g(massclimber - Mu(k) * massrock)) / (massrock - massclimber) Plugging the numbers in the equation, i get a = 0.127904 m/s2 My homework tells me this is wrong and I can't figure out why. any help is appreciated!