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The purpose of the dynamics of moving systems is to search for themathematical model that describes the link between the resultant applied force,that is the cause, and the speed of system that is the effect. Thismathematical link provides the law of motion and from Newton forward it hasbeen specified by an differential equation. Starting from the principles of theTheory of Reference Frames it is possible to arrive at new interesting resultsin the study and in the analysis of dynamical systems provided with linearsymmetry and central symmetry. Really the most interesting consequences arerelative to the behaviour of microphysical systems and elementary particles.Some kinematic and dynamic physical parameters, valid for analysis ofmechanical systems, lose meaning in microphysical systems. For these systems itis necessary to define therefore new parameters on the ground of the behaviourof observable physical magnitudes. Surely the most important physical quantity,defined in this paper and relative to elementary particles, is theelectrodynamic mass that is different from mass of mechanical systems. Thisparameter allows to understand some features of the behaviour of elementaryparticles in inertial and not inertial reference frames. In the last part ofthe paper an important relation between time and mass is proved and new generalequations of space time are defined for any reference frame.

Dynamics and electrodynamics of moving real systems in the Theory of Reference Frames