What is defined as a state of no acceleration, with the body at rest?

Equilibrium refers to a condition in which all forces acting on a body are balanced, resulting in no net acceleration. When a body is at rest and in equilibrium, it maintains its position without any movement, meaning there is no change in velocity. This state can apply to various scenarios, such as an object lying still on a surface or a person standing without any motion.

Dynamic stability, on the other hand, involves maintaining control during movement and is not relevant when discussing a state of rest. Static friction pertains to the force that must be overcome for an object to start moving, while kinetics deals with the effects of forces on the motion of objects. Thus, the concept of equilibrium is specifically aligned with a state of no acceleration and the body being at rest.