The first public institution of higher education in North Carolina, the school opened its doors to students on February 12, 1795. The university offers degrees in over 70 courses of study through fourteen colleges and the College of Arts and Sciences.
Noun. 1. pulley-a simple machine consisting of a wheel with a groove in which a rope can run to change the direction or point of application of a force applied to the rope. pulley block, pulley-block, block. block and tackle-pulley blocks with associated rope or cable.
How do pulleys work? A fixed pulley, also known as a simple pulley, does not confer any mechanical advantage. The force needed to lift a load is equal to the downward force of gravity on the load. Using a moving pulley multiplies the lifting force by two, meaning that only half the force of gravity is needed to lift it.