Work, Potential Energy and Virtual Work

This lecture covers the concepts of work, potential energy, and virtual work, focusing on the relationship between forces and displacements in statics and dynamics. It explains the calculation of work done by a force, the generalization of infinitesimal work, and the principle of virtual work for determining equilibrium states. The lecture also introduces the concept of potential energy and its application in solving statics problems. Additionally, it discusses the stability of equilibrium states and the use of virtual displacements in analyzing mechanical systems.