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When a magnet is dropped inside a copper tube its exit is delayed by a few minutes why?
Sundareswaran
This effect has nothing to do with the magnet sticking to the side of the copper. Magnets will only stick to ferromagnetic substances such as iron and steel, not copper.
The actual physics of this experiment is more subtle. The magnet falling down the tube results in a changing magnetic field within the copper tube. This changing magnetic field produces a current within the tube. That current creates a new magnetic field within the tube which slows down the magnet.
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∙ 15y ago
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