Equivalent Systems Theory and Example | Statics

This video briefly demonstrates equivalent system theory followed by solving an equivalent system example. First part of the video shows a free body diagram of a structure subjected to a number of forces at different direction. The video, then, talks about equivalent systems theory clearing the fact that in an equivalent system the complex problems have been simplified into equivalent forces and moments to make the calculations much easier and less time consuming.

Next, the video does a comprehensive workout on an equivalent system example where it has asked to resolve the given forces into a single resultant force and to find couple moments at bottom of the structure. Moving on, the video illustrates the given free body diagram of the exemplary structure & step by step shows how to resolve the given forces to obtain a single resultant. Later, the video uses the obtained resultant force to determine the couple moment at bottom part of the structure.