Is a sheave a component of the pulley?

A sheave is indeed a component of a pulley system. In mechanical contexts, a pulley typically consists of a wheel (the sheave) that is grooved to allow a rope, cable, or belt to run along its edge. The primary function of the sheave is to redirect force and transmit motion or torque, which is essential in lifting and lowering loads.

By having a sheave as a part of the pulley, it enables changes in direction of force application, which can enhance the efficiency and effectiveness of lifting processes. This relationship is fundamental in various applications such as cranes, elevators, and conveyor systems, where pulleys are commonly used.