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- From: smay@boi.hp.com (Scott Smay)
- Subject: Re: A "Paradox"
- Sender: news@mail.boi.hp.com (News Server Project)
- Message-ID: <BxvKop.8tI@mail.boi.hp.com>
- Date: Tue, 17 Nov 1992 19:26:48 GMT
- References: <1992Nov17.014642.2212@dartvax.dartmouth.edu>
- Organization: Hewlett-Packard / Boise, Idaho
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- Benjamin J. Tilly (Benjamin.J.Tilly@dartmouth.edu) wrote:
- : Here is an interesting problem which I thought of. It is well known
- : that a charged particle moving through a magnetic field does not gain
- : or lose kinetic energy. However it is also well-known that a magnet
- : moving through a magnetic field can gain kinetic energy. But a magnet
- : is a collection of charged particles each of which does not gain
- : kinetic energy so how can this be? I believe that I know the answer but
- : I will just leave this to see if other people come to the same
- : conclusion that I have.
- :
- There are forces holding the magnet together, so the individual moving
- charges are not free to move in the direction specified by the Lorentz
- force. Instead, the whole assembly moves in the direction of the net
- force.
-
- scott
-