7-4 Center of mass of solid objects 1)If an object has symmetry, the CM must lie at the geometrical symmetrical center of the object. Suppose the mass is uniformly distributed cmo 2)If the object has no symmetry, sometimes it is also easy to find its cm position △ a (b)7-4 Center of mass of solid objects 1) If an object has symmetry, the CM must lie at the geometrical symmetrical center of the object. Suppose the mass is uniformly distributed. cm • • 2) If the object has no symmetry, sometimes it is also easy to find its cm position: (a) (b) cm cm •