Solving a Three-Force Member Example

A three-force member is a rigid body acted on by three forces at three points. The forces must have concurrent lines of action. If the forces are parallel, their lines of action stay parallel instead.

A dumpster provides the example used here. It is connected to a pin support at point A and to a ...

A rigid body subjected to three forces acting at three different points is called a three-force member.

The line of action of these forces must be concurrent, except for parallel forces where the lines of action are parallel.

Consider a dumpster connected to a pin support at point A and a pin attached to a hydraulic cylind...