Virtual Work II: Equilibrium States and Internal Loads in Nonrigid Systems

This lecture delves into the concept of virtual work applied to nonrigid systems, focusing on equilibrium states and internal loads. Through examples like drawbridges and car jacks, the instructor explains how to determine support reactions and calculate internal loads using the Principle of Virtual Work. The lecture also covers the application of virtual work to mobile systems and the replacement of supports by pins for accurate calculations.