> F_{A->B} = G * M_A * M_B/d(A,B)^3 Your formula is wrong. It's either: F_{a} = F_{b} = G * m_a * m_b/r^2 or \vec{F} = G * m_a * m_b/|r|^3 * {\vec{r

> F_{A->B} = G * M_A * M_B/d(A,B)^3 Your formula is wrong. It's either: F_{a} = F_{b} = G * m_a * m_b/r^2 or \vec{F} = G * m_a * m_b/|r|^3 * {\vec{r}} > but where does that come from? You find that by studying physics, not history of physics. > it would have been intellectually pleasing(at least for me) to know how Physicists came with it, what's the motivation behind 1/d(A,B)^3, how did people come up with G, how it was measured, etc. Yes, understanding a specific change in the state of physics at time T is most certainly helped by understanding it at time T-1. But make no mistake here, this is still physics and not history of physics (whatever that means).