System of Forces and Couples

In the analysis of structural systems, it is common to encounter members subjected to various forces and couple moments. Simplifying these systems can make the analysis more manageable and easier to understand. One approach to achieve this simplification is by moving a force to a point O that does not lie on its line of action and addin...

Consider a structural member having a system of various forces and couple moments.

To move the force to a point O that is not lying on the line of action of force, a couple with a moment equal to the moment of the force about O is added.

According to the principle of transmissibility, a force acting on a body is a...