[time-nuts] Japan Quake May Have Shortened Earth Days, Moved Axis
Poul-Henning Kamp
phk at phk.freebsd.dk
Fri Jul 15 05:54:46 UTC 2011
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...
--
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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