Hi everyone, first post here. Today i crushed into a question. I was going to write it down here, then i crushed into another one. Lets say we want to know the potential energy of a body relative to a center of gravity. I will refer to gravitys acceleration as "g" and to mass as "m". "k" will be some constant unit. If we take a near, lower height(h) as reference it would be "m·g·h" because g doesnt change with h. But if i want to reference to the center of gravity, because of g(h) = k/h2, i cant use that anymore. I suppose i need ∫m*g(h) dh from 0 to the wanted height. That supposes potential energy is infinite at any point !! Some ideas? Am i doing something wrong? Thanks!