Static Equilibrium

Static Equilibrium is a physics term used to refer when the total amount of force acting upon an object adds up to zero. It could be related to a tug-of-war game. In tug-of-war, both sides pull the ropes toward themselves, but if both sides pull with the same force, the rope won't move. Static equilibrium doesn't mean there aren't any force acting on the object, it just means the forces are balanced.

As you can see, both sides pull with the same force, and as a result, the rope doesn't move.

The static equilibrium can be found using a force table. Force tables use vector forces to balance a ring in the center of the table. Someone is able to find the static equilibrium using trigonometry and Pythagorean Theorem given two forces and two angles. A more detailed lab of this procedure could be found here. Anyway, when the ring is not touching the center piece, it has reached static equilibrium.