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  4. Why does a magnet dropped through a copper pipe move so slowly?
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Why does a magnet dropped through a copper pipe move so slowly?

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Offline Ru Ko (OP)

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Why does a magnet dropped through a copper pipe move so slowly?
« on: 24/03/2019 02:32:31 »
When a powerful  rare earth magnet is dropped through a copper pipe it moves very slowly through it. Is it because the electric/magnetic field generated by the magnet in the copper pipe is in opposition to the magnetic field (like pole) or is it attraction (unlike pole) to the magnet? In other words is it attraction or repulsion that slows the magnet?
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Offline Kryptid

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Re: Why does a magnet dropped through a copper pipe move so slowly?
« Reply #1 on: 24/03/2019 03:28:53 »
It's both attraction and repulsion at the same time:
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Offline Ru Ko (OP)

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Re: Why does a magnet dropped through a copper pipe move so slowly?
« Reply #2 on: 24/03/2019 17:11:47 »
Thanks very. much.
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Offline Petrochemicals

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Re: Why does a magnet dropped through a copper pipe move so slowly?
« Reply #3 on: 02/04/2019 12:07:54 »
Thanks for that both, this is facinating,

I have found this one, given that the magnet does not drop, where is the heat energy coming from ?

Edit

It may be that noise in the background i hadnt noticed before.
« Last Edit: 02/04/2019 12:15:36 by Petrochemicals »
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Offline Bored chemist

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Re: Why does a magnet dropped through a copper pipe move so slowly?
« Reply #4 on: 02/04/2019 19:47:14 »
Quote from: Petrochemicals on 02/04/2019 12:07:54
where is the heat energy coming from ?
Quote from: Petrochemicals on 02/04/2019 12:07:54
It may be that noise in the background i hadnt noticed before.
The noise and the heat come from a high power radio frequency oscillator.


This version of the video is less misleading.

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