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.

answer: the metamorphic rocks are formed when they are exposed to high pressure and high temperatures. this happens when one of the earth's plates comes in contact with the other plate by traveling in opposite directions, straight into each other or slipping under one another. the friction that is caused by this activity results in   melting of rocks and when it cools they are known as metamorphic rocks. this process needs a controlled amount of pressure and temperature otherwise it may turn into magma.