1. The problem statement, all variables and given/known data A system comprised blocks, a light frictionless pulley, and connecting ropes is shown in the figure. The 9.0-kg block is on a perfectly smooth horizontal table. The surfaces of the 12-kg block are rough, with \mu_k = 0.30 between the block and the table. If the 5.0-kg block accelerates downward when it is released, find its acceleration. the figure looks like this picture (except M= 5kg): http://www.cramster.com/answers-feb...s-light-frictionless-pulle_1126069.aspx?rec=0 14 minutes ago - 4 days left to answer. 2. Relevant equations 3. The attempt at a solution I want to say it is 1.6 m/s^s but I am not sure If I did it right. I just added the force friction to the force tension and then divided by the weights (9+5). Not sure if this is correct or not.