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.
Science speaks of families of machines, different devices working on similar principles -- inclined plane, wedge and screw are in the plane family; three other so-called simple machines, lever, wheel and axle, and pulley, are part of the lever family. I'm not just a fastener; I'm a family.ust as the force you apply to a wedge acts along a distance -- from wide end to thin one -- the force you use to move objects along an inclined plane acts along a distance, too. In the case of the inclined plane, you start at the thin end of the wedge, so to speak, and move up the plane to the wide end.