Static Motion

Static motion, more accurately called static equilibrium, refers to a state where an object is at rest and not moving. In this state, all the forces acting on the object balance each other out, resulting in no change in position or motion. For example, a book lying on a table remains at rest because the force of gravity pulling it downward is perfectly balanced by the upward force exerted by the table. Understanding static equilibrium helps explain why objects stay still unless acted upon by an unbalanced force, which then causes movement or change in motion.