1. The problem statement, all variables and given/known data Two blocks are connected by a string that goes over an ideal pulley. Block A has a mass of 3.00 kg and can slide over a rough plane inclined at 30 degress to the horizontal. The coefficient of kinetic friction between block A and the plane is 0.400. block B has a mass of 2.77 kg. What is the acceleration of the blocks? 2. Relevant equations fk = ukFn 3. The attempt at a solution Fn - 3gcos(30) Fn = 25.4611 fk = 0.4*25.4611 = 10.1845 Using force diagrams I identified the forces acting on the blocks to be: T is the tension in the rope For block A T - fk - 3gcos(30) = 3a For block B T - 2.77g = 2.77a Then I combine them fk - 3gsin(30) -3a = 2.77g - 2.77a a = 98.4 I know the answer is 0.392m/s^2 but I don't know where I'm going wrong. I assumed that block B is being pulled up because block A has a greater weight. Is this a wrong assumption?