1. The problem statement, all variables and given/known data Find the acceleration of the system http://img266.imageshack.us/img266/4904/2pulleyszw9.jpg [Broken] The rope is massless The mobile pulley is not massless, it weighs 20 grams. Find the accelereation of the system 2. Relevant equations F=mg F=ma g = 9.8 3. The attempt at a solution for W1: Fy = 2T-W1 = ma 2T-(500+20)*g = (500+20)*a 2T-520g = 520a (equation 1) for W2: Fy = W2-T=ma 300g-T=300a T = 300(g-a) (equation 2) equation 2 in equation 1 gives a = 1,43 Is it correct?