Bar magnets are dropped in long pipes made up of plastic and copper (of the same length) simultaneously. The bar magnet comes out later through the copper pipe than through the plastic pipe. Why?

When the bar magnet moves through the copper pipe, it induces eddy currents in the pipe due to Faraday’s Law of Electromagnetic Induction. These eddy currents create a magnetic field that opposes the motion of the magnet, according to Lenz’s Law, causing the magnet to slow down.

In contrast, the plastic pipe is a non-conductor and does not allow eddy currents to form. Therefore, no opposing force acts on the magnet, and it falls freely due to gravity, reaching the bottom faster than the one in the copper pipe.

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