88.) Two blocks are connected by a rope that passes over a set of pulleys. One block has a weight of 412 N, and the other has a weight of 908 N. The rope and pulleys are massless and there is no friction.
(a.) What is the acceleration of the ligher block?
(b.) Suppose that the heavier block is removed and a downward force of 908 N is provided by someone pulling on the rope.
(c.) Explain why the answers in (a) and (b) are different.
I only need help with (a) and (b), I understand that the acceleration is going to be much less in (a), because the two blocks share inertia while in (b), only the smaller block remains.
But how do you calculate the acceleration in (a) and (b)?
I've been spending a long time on this problem and I would be grateful for help.