1. The problem statement, all variables and given/known data The suspended 2.29 kg mass on the right is moving up, the 1.3 kg mass slides down the ramp, and the suspended 7.7 kg mass on the left is moving down. There is friction between the block and the ramp. The acceleration of gravity is 9.8 m/s2 . The pulleys are massless and frictionless. [PLAIN]http://img816.imageshack.us/img816/6190/009q.png [Broken] What is the acceleration of the three block system? Answer in units of m/s2 2. Relevant equations The sum of Fx= N-mgcostheta=o => N=mgcostheta The sum of Fy= mgsintheta-usN=0=> mgsintheta-us(mgcostheta) 3. The attempt at a solution are these the correct eqations for this?