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Magnet dropping through aluminum cylinder

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Uploaded on Mar 19, 2011

As it drops, the magnet induces a current in the aluminum. The current generates a magnetic field which opposes the supermagnet, so it moves quite slowly. If the aluminum were instead a superconductor, the magnet would fall just far enough to create a field that would balance its weight. Since there are resistance losses, the magnet continues to fall.

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