Re: a relativity question

[Jack Uretsky <jlu@HEP.ANL.GOV>]

Here's a hint:
        Put the compressed spring on a horizontal table and cut the string
the keeps it compressed.  What will move with respect to what?
                                        Regards,
                                                Jack

On Mon, 25 Nov 2002, SSHS KPHOX wrote:

> Every year I try to help my students gain an introductory view to
> relativity, I learn more. I hope you will help me once again.
>
> A question in Giancolli asks: Is a compressed spring more massive than the
> relaxed version of the spring.
>
> I understand that Work has been done and there is no change of KE.
> Classically we say there is now PE stored. But it seems that to conserve
> energy in the relativistic sense that there would be added mass measured.
> If so, I wonder if the same would be said of an elevated mass?
>
> I am ready to learn!
>
> Thanks
>
> Ken Fox
>
> This posting is the position of the writer, not that of SUNY-BSC, NAU or the AAPT.

--
        "What did Barrow's lectures contain?  Bourbaki writes with some
scorn that in his book in a hundred pages of the text there are about 180
drawings.  (Concerning Bourbaki's books it can be said that in a thousand
pages there is not one drawing, and it is not at all clear which is
worse.)"
                                        V. I. Arnol'd in
                                Huygens & Barrow, Newton & Hooke

This posting is the position of the writer, not that of SUNY-BSC, NAU or the AAPT.