Statics: Forces and Moments

This lecture covers the concept of statics, where objects are at rest with zero velocity and acceleration, leading to relationships with forces and moments. The instructor explains classic conditions for equilibrium, such as force and moment balance, and introduces the concept of force torques. The lecture delves into analytical conditions for equilibrium based on differential calculus, emphasizing the importance of virtual work and stability criteria. The instructor also discusses the dangers of static equilibrium, illustrated with examples like an unstable ladder. The lecture concludes with a detailed explanation of force torques and their equivalence, highlighting the principles of D'Alembert and virtual work for solving equilibrium problems.