Pulley

A pulley is a mechanical device that allows for redirection of a rope while maintaining low frictional forces. A single sheave pulley allows for a single pass and redirection of a rope, however, multiple sheave pulleys are available which allow for multiple passes and redirections of a rope in one location. Multiple sheave pulleys are often used in Block and Tackle setups to increase the mechanical advantage of the system.

See Also

• Block and Tackle
• Suspension