polygon of forces
A graphical representation of the composition and resolution of forces when there are more than two such forces, and when, therefore, the parallelogram of forces (which see) cannot be used…. (Sturgis, 1900)
A graphical representation of the composition and resolution of forces when there are more than two such forces, and when, therefore, the parallelogram of forces (which see) cannot be used…. (Sturgis, 1900)