Internal Forces Analysis in Beams

This lecture covers the analysis of internal forces in beams, including determining if structures are isostatic or hyperstatic, calculating bearing reactions, and identifying internal forces without calculations. It also discusses equilibrium equations, connection forces, and the principles of action and reaction. Differential equations for equilibrium, diagrams of internal forces, and rules for NVM diagrams are explained. The lecture emphasizes the importance of isolating fragments for analysis and understanding the stability of structures through support reactions and equilibrium conditions.