Pulley Systems

Concept Overview

Equilibrium of Forces

Lecturer Procedure

Pulleys match with mathematical problem from the lecture - calculation results can be visualized.

Variation:

Use black poster board rather than white to make the strings more visible.

Historical References; Taken from original work of Percy H. Carr, 1970 

“Usually pulley systems are quite efficient machines; therefore, I think they are best discussed from the viewpoint of forces in equilibrium rather than from the viewpoint of virtual work. Hence, they are placed under the heading of STATICS rather than under ENERGY.”