A light rope is attached to a block of mass 4.10kg that rests on a horizontal, frictionless surface. The horizontal rope passes over a frictionless, massless pulley and a block of mass is suspended from the other end. When the blocks are released, the tension in the rope is 11.0N ok so i was able to find the acceleration of either block, which was 2.8 m/s^2 but them im asked to find the mass of the hanging block what i did so far was take 11.0N and divided it by 2.8m/s^2 since both blocks are supposed to have the same acceleration. but i get the same mass as the block on the table, which is a wrong answer.. so then i took 11.0N and divided it by 9.8, and i still get a wrong answer. how else am i supposed to approach this?