A field that does not move stagnates. The DynamicsMovementSystem names the kinetic infrastructure through which a corpus maintains its internal motion: not the content of its concepts, but the energy that drives them into new configurations. In physics, dynamics is the study of forces and motion. In Socioplastics, it is the study of conceptual forces: the pushes and pulls that drive concepts into new combinations, new scales, new applications. The DynamicsMovementSystem identifies the forces at work in the corpus: the gravitational pull of heavily cited concepts, the centrifugal force of scalar expansion, the friction of disciplinary boundaries, the inertia of established formulations. These forces are not metaphors. They are structural operators. A heavily cited concept exerts gravitational pull on adjacent nodes, drawing them into its orbit. A scalar expansion generates centrifugal force, pushing concepts toward new magnifications. A disciplinary boundary generates friction, slowing cross-field movement. An established formulation generates inertia, resisting transformation. The DynamicsMovementSystem makes these forces explicit. It allows practitioners to calculate the energy required to move a concept from one configuration to another. Node 1509 places this concept in Core III because dynamics is one of the seven integrated disciplines. But the system is not about physics. It is about the physics of conceptual motion. Without this concept, the field is static. With it, the field is kinetic.