D'Alembert's Principle

D'Alembert's Principle is a concept in classical mechanics that combines Newton's laws of motion with the idea of inertia. It states that the sum of the differences between the forces acting on a system and the inertial forces (resisting acceleration) is zero. In simpler terms, it helps us analyze a system in equilibrium by treating it as if it's not only experiencing real forces but also reacting to its own inertia. This principle allows us to set up equations to solve for motion in a more systematic way, bridging the gap between dynamics and statics.