where and m, are the equivalent masses of the rotating elements applied to the longitudinal and transverse displacements of the upper hinges for one pair of rods (hinges are on the circumference, radius ). Thus, the forces of three linear shock absorbers act on the ring momenta of angular shock absorbers . and the force of inertia of the equivalent masses , the components of which are equal to and the moments of inertia Considering these additional forces the dynamic equations of relative motion of the center of the ring have the form If one assumes that the center of rotation of the ring coincides with its center of mass, and the rotations occur relative to the axes parallel to one can use the following simplified equations of rotational motion:
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