Effect of centrifigual force on a gavity bound object

  • Thread starter soandos
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  • #1
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is there a relation between the density of a sphere spinning at a given rate and the degree by which the minor axis shrinks?
if there is a relation, what is it.
thanks a lot
 
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  • #2
HallsofIvy
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That will depend very much on the elasticity of the sphere.
 
  • #3
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The faster the sphere spins, the less dense the sphere is. It seems to be proportional to the length of the minor axis.
 
  • #4
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assuming though that i have two spheres made of the same material, would the differing densities make a difference?
also, i think that pixel you misunderstood. i realize that as it spins it should get more dense as the volume is shrinking, but that is not my question.
 
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  • #5
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I dont think gravity has much to do with it. its a GRAVITY bound sphere. it would form an ellipsoid. the denser the object the stronger the gravity so yes for any given rotation rate the degree of flattening will be less.


i presume this is about the neutron star you mentioned in your other post.
 
  • #6
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i realized that this would happen. i just do not know by how much.
 

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