Static forces and virtual-particle exchange

**Static Forces:** Static forces refer to the forces that act on objects at rest or in equilibrium. In physics, when we analyze static forces, we generally consider the forces that are not changing with time and that keep an object in a stable state. Examples include gravitational forces, normal forces, frictional forces, and tension forces. In classical mechanics, static forces can be represented using vector diagrams where the net force acting on an object is zero.