1. The problem statement, all variables and given/known data Find the acceleration of the masses based on the figure below. m1 = 1kg m2 = 2kg m3 = 3kg 2. Relevant equations - 3. The attempt at a solution I am completely lost, I've tried thinking and thinking over and over again about this problem, wouldn't the acceleration be 0 since m1 and m2 are on one side and m3 is on the other side, and both sides have 3kg? I've attached an image of the drawing which you must see in order to understand the problem, could someone point me to the right direction? Appreciated.