Reactions Example 1

The video tutorial explains how to draw free body diagrams for two massless beams subjected to external and reaction forces. It begins with an introduction to the problem, followed by a detailed analysis of each beam. The first beam is influenced by a 30 Newton force and pin supports, while the second beam is connected to roller supports. The tutorial emphasizes the importance of understanding reaction forces and Newton's third law. Although the video does not solve for the reaction forces, it sets the stage for further analysis using Newton's laws.

What assumptions are made regarding the beams in this problem?

Explain how Newton's third law applies to the forces at point B.