can u explain at the point of formation of universe - hw did the earth started to rotate and revolve. How suddenly did it got the centrifugal and centripetal force.
any explanation or useful links wud do me favour.
Ok! If we beleive in the big bang theory indeed the kinetik energy given by the explosion is converted to a rotation energy. And this is why the earth have approximatively a spherical form. Any way you can see the link : http://www.astrosurf.org/luxorion/index.htm