[ntp:questions] Result of Earth Quake speeds up earth?

John Hasler jhasler at newsguy.com
Tue Mar 15 13:13:37 UTC 2011

uwe writes:
> Adjust earth rotational energy by the amount of energy released from
> the earthquake?

A quake can't change the rotational energy (or angular momentum): where
is the reaction force?  What it can do is change the mass distribution
slightly, decreasing the radius of gyration and therefor requiring the
rate of rotation to increase to conserve momentum.
John Hasler 
jhasler at newsguy.com
Dancing Horse Hill
Elmwood, WI USA

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