The rings with molecular current as the model of the passive magnetic bearing

There will be presented a model of a passive magnetic bearing. The model uses the ring with molecular current as a source of external magnetic field (the unmovable magnet mounts in a case of machine). The next ring with molecular current moves in external field generated by unmovable ring (the magnet connects with the shaft of machine). The density of magnetic field is obtained from the Biota-Savarta law and the force is estimated from the Lorentz law. Moreover, there will be estimated the damping factor proportional to the speed of the movable magnet. The model can be used to design the radial passive magnetic bearings.