Inquiry into the Existence of Objects' Center of Gravity
People have different understandings of the center of gravity at different stages of education,mainly due to the different definitions is slightly different in different stages of physics teaching.In order to clarify the the center of gravity of objects more accurately,classical mechanics was used to provide a more rigorous definition of the center of gravity.It is also proved that small-scale objects near the earth's surface have a center of gravity that coincides with their center of mass,and the center of gravity of large-scale objects was not necessarily at their center of mass.Moreover,for even larger and non-highly symmetrical objects,only a"line of gravity"exists and there was no center of gravity.
classical mechanicscenter of masscenter of gravity