Ten laws of rotational dynamics of rigid, solid bodies in rotation are defined on the basis of the aforementioned axioms, whenever such bodies are subject to successive, non-axial force couples, and even for these bodies when they are endowed with intrinsic angular momentum.
In accordance with the proposed laws of the Theory of Dynamic Interactions we can conceive of a universe in constant dynamic equilibrium in which the resulting null force couple will generate a constant orbital movement, in a closed path, as it acts. The significance of this mathematical model is obvious; a model in which forces are not the only leading characters, but also share the limelight with the force momenta which, as long as they remain constant, will generate continuously recurring orbital movements, thus leading a system in dynamic equilibrium and not limitless expansion.