Date: Fri Aug 7 13:40:29 2009

Author: chuck britton

Subject: Re: Variation on a demo I saw at Ann Arbor

Post:

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I'll bite -

The DRIVEN magnet (the one you'll be stopping) is generating the
'back emf' of the other's induced current.
When the back emf goes away the current will spike and better oppose
the remaining magnet's motion, perhaps stopping it.


On Aug 7, 2009, at Aug 7(Fri) 9:58 , Sam Sampere wrote:

> Poser: If you set the apparatus into oscillation and stop by hand
> one of the magnets, what
> happens to the current?


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I'll bite -

The DRIVEN magnet (the one you'll be stopping) is generating the 'back
emf' of the other's induced current.
When the back emf goes away the current will spike and better oppose the
remaining magnet's motion, perhaps stopping it.


On Aug 7, 2009, at Aug 7(Fri) 9:58 , Sam Sampere wrote:

> Poser: If you set the apparatus into oscillation and stop by hand one
> of the magnets, what
> happens to the current?

--Apple-Mail-3-766377080--

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