Two masses of 12.00 kilograms and 7.50 kilograms, respectively, are connected to a pulley, as shown in the diagram at right. Initially, the 7.50 kilogram mass is held on the ground, but once released, the weight of the 12.00 kilogram mass causes the pulley to spin counterclockwise. Determine the speed of the 7.50 kilogram mass the moment the 12.00 kilogram mass hits the floor if it begins 3.00 meters above the floor.