Question about the shape of the earth

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Why is the Earth not perfectly round
 
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if you spin a ball that is not perfectly rigid, it bulges outward slightly at the spin equator. If it were made of jello, it would bulge out quite a lot.
 
The distribution of mass on Earth is not constant, altering the shape of the earth.
 
Suggest you checkout this link
http://www.lhup.edu/~dsimanek/scenario/centrip.htm"
 
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