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When does a body become spherical?

Posted: 20.07.2006, 22:30
by Nick
Do scientists know of any sort of threshhold of mass at a which a rocky body will begin to take on a spherical shape under the influence of its own gravity?

Posted: 21.07.2006, 11:46
by selden
See the answer to Q 3 of
Problem Set #8 of the University of Rochester's course Astronomy 111:
http://astro.pas.rochester.edu/~aquille ... P8_sol.pdf

It shows how to calculate it.

Posted: 21.07.2006, 19:20
by Nick
Awesome.

Are there any landforms on any of the spherical terrestrial bodies we know of that might have been created by the deformation of the body's surface when it took on a spherical shape? If not, is something like that possible?