From: fortunati.luigi@gmail.com   
      
   Oliver Jennrich giovedì 27/06/2019 alle ore 19:07:43 ha scritto:   
   > The shape of a body that is held together by internal forces is   
   > determined by the balance of the external (tidal) force and the   
   > internal forces.   
      
   Yes, there are the INTERNAL forces that are always present and that do   
   not have a privileged direction, so they tend to keep the initial   
   spherical shape of the jelly ball (on average).   
      
   And there is the EXTERNAL (tidal) force that acts more on the "south"   
   part of the sphere than the "north" part which is farther from the   
   center of gravity, thus causing an elongation at the poles and a   
   crushing at the equator.   
      
      
   [[Mod. note -- Yes.  As Oliver Jennrich said, the body's shape   
   is determined by the balance of these two forces.   
   -- jt]]   
      
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