Static equilibrium

Static equilibrium refers to a state where an object is at rest and all the forces acting on it are balanced, meaning there is no net force or torque causing it to move or rotate. For example, a book resting on a table is in static equilibrium; the downward force of gravity is perfectly balanced by the upward force from the table. This balance ensures the object remains stable and unchanged in position over time, making static equilibrium crucial in fields like engineering, architecture, and physics, where stability under load is essential.