>From: Harry Veeder [email protected]
>If the "law of inertia" is universally true, some sort of centripetal >force is required to keep the disc revolving in a circle as it moves >above the magnets. I can vaguely grasp how the phenomena of locking >preserves the tilt of the disc, but how does locking bring about the >necessary centripetal force? >Harry It is a beautiful presentation and raises several good questions such as: It appears to take force to get the disk to move close to the supporting magnetic structure. This suggests that energy has to be applied to the system as the force occurs over a finite distance. Then if the disk is removed, force again must be applied in the opposite direction. More energy is absorbed by the system of magnet and disk. Now, where does the energy go which is supplied? I understand that a superconductor does not allow resistive loss from current flow so I suspect magnet must gain energy. Does it actually become warmer as a result of this operation? Dave
