I think the assumption is the density remains the same (rho=M/(r^3)) stays the same so GM/(r^2) becomes G rho r.
I think it is generally useful for people to have a picture in their head about whats going on as work quite frequently gets lead by instinct and educated guesswork which can be made rigorous once you've decided its…
I think the assumption is the density remains the same (rho=M/(r^3)) stays the same so GM/(r^2) becomes G rho r.
I think it is generally useful for people to have a picture in their head about whats going on as work quite frequently gets lead by instinct and educated guesswork which can be made rigorous once you've decided its…