Statics's the branch of mechanics concerned with the analysis of loads (force, torque/moment) on physical systems in static equilibrium, that's, in a state where the relative positions of subsystems don't vary over time, or where components and structures are at a constant velocity. When in static equilibrium, the system's either at rest, or its center of mass moves at constant velocity. The study of moving bodies's known as dynamics. By Newton's first law, this situation implies that the net f… (More on Statics)