[time-nuts] Japan Quake May Have Shortened Earth Days, Moved Axis

[Sanjeev Gupta]

On Fri, Jul 15, 2011 at 13:54, Poul-Henning Kamp <phk at phk.freebsd.dk> wrote:

> In message <3209.12.6.201.213.1310686158.squirrel at popaccts.quikus.com>,
> "J. For
> ster" writes:
>
> >If you got all the Chinese to just stand on a chair, it would increase the
> >Moment of Inertia of the earth a smitch, and it would slow the rotation
> >because of the Conservation of Angular Momentum.
>
> 1. It's not obvious that there are that many chairs in China.
>
> 2. It really does not change the momentum that much:
>
>        m(pop,china) = 1.5e9 * 50kg = 7.5e10 kg
>        m(earth)     = 5.97e24 kg
>
> A ratio of roughly 8e13...
>

Spoilsport!

If you are going to do the actual calculations, that rather destroys my
daydreaming!

-- 
Sanjeev Gupta
+65 98551208     http://www.linkedin.com/in/ghane



>
> --
> Poul-Henning Kamp       | UNIX since Zilog Zeus 3.20
> phk at FreeBSD.ORG         | TCP/IP since RFC 956
> FreeBSD committer       | BSD since 4.3-tahoe
> Never attribute to malice what can adequately be explained by incompetence.
>
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