Question

What happens when a body is in a equilibrium?

Answer 1

1. The result of all forces acting on is zero, whether the body is at rest or in uniform motion.
2. At equilibrium, the net force acting on the body is $0$.
3. When a body or a system is in equilibrium, there is no overall tendency to change. In physics, equilibrium has to deal with the forces acting on a body.
4. A body is in equilibrium when it is neither linear nor in angular acceleration.
5. Equilibrium is of three types:
6. Stable equilibrium: When we disturb a body by a small distance, the state produces a force that tends to oppose the displacement of the body and return to its state of equilibrium.
7. Unstable equilibrium: When we disturb a body by a small distance, the state produces forces that do not tend to oppose the displacement of the body and it moves away from its original position.
8. Neutral equilibrium: If a ball is pushed slightly, it will neither return to its original position nor move forward. It will eventually come to the rest.