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Showing content from http://scienceworld.wolfram.com/physics/MomentofInertiaEarth.html below:

Moment of Inertia--Earth -- from Eric Weisstein's World of Physics

    

The Earth is roughly an oblate spheroid, with the bulge occurring at the equator. Let A be the moment of inertia along an equatorial axis, and let C be the moment of inertia about the polar axis. Then Lambeck (1980) gives

   
while Stacey (1977) gives    

Moment of Inertia, Moment of Inertia--Ellipsoid, Moment of Inertia--Oblate Spheroid, Moment of Inertia--Sphere, Precessional Constant


Lambeck, K. The Earth's Variable Rotation. Cambridge, England: Cambridge University Press, p. 27, 1980.

Stacey, F. D. Physics of the Earth, 2nd ed. New York: Wiley, 1977.

© 1996-2007 Eric W. Weisstein

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