In simulation performed here, we gain information that a system with large number agents based on action on input K equals to two, will reach equilibrium and stable condition over strategies taken out by its agents faster than higher input, that is K equals to three. Equilibrium is the state in which market supply and demand balance each other, and as a result, prices become stable. Generally, an over-supply of goods or services causes prices to go down, which ... 9.3. Equilibrium: Stable or Unstable? Equilibrium is a state of a system which does not change.. If the dynamics of a system is described by a differential equation (or a system of differential equations), then equilibria can be estimated by setting a derivative (all derivatives) to zero.Free body diagrams : FBDs are one of the most important tools to determine if a structure / body is in equilibrium or not. In FBDs we draw a specific body (or a specific part of a body) and mark all the externalforces that are acting on it. Chapter 3: Stress and Equilibrium of Deformable BodiesForce Equilibrium . In static systems, where motion does not occur, the sum of the forces in all directions must always equal zero (otherwise, it's a dynamics problem). This concept can be represented mathematically with the following equations. Rotational Equilibrium . The concept also applies to rotational motion. And all that begins with the purest form of physics: the field of mechanics. So before we begin our coverage of aerodynamics, a quick primer on mechanics is in order. The United States Air Force requires its safety officers to pass this course and it is of course a prerequisite for test pilot school. Mechanics makes a better pilot.