Wobbly bar: Magnets in frame balanced by repulsive forces.

5H20.20 • D+35+0

Wobbly bar: Magnets in frame balanced by repulsive forces. A) Two bar magnets are placed so that the top magnet 'floats' above the bottom magnet. The magnets are held in a frame so that only vertical motion is possible. The magnets are made so that the north-south pole is through the narrow 'height' rather than the length. B) Donut-shaped magnets are suspended on a plexiglass rod so that they repel each other. The top two magnets float. C) Two bar magnets can push or pull each other on the table top.