Virtual Work I: Introduction to Structural Mechanics

This lecture covers the concepts of work, potential energy, and the principle of virtual work in the context of structural mechanics. It discusses the relationships between forces, couples, and virtual displacements, emphasizing the importance of equilibrium conditions. The lecture also explores the application of virtual work to solve problems related to rigid systems and the advantages and disadvantages of using this method. Additionally, it delves into the calculation of total virtual work and the considerations when dealing with active forces and virtual displacements.