This question already has an answer here:

In high school students are taught the formula that describes the universal gravitational force $F=G\frac{m_1 m_2}{r^2}$. However it is not taught how and why Newton came up with it. Does Newton give a demonstration of the formula?


merged by HDE 226868 Jan 8 '17 at 15:59

This question was merged with How did Newton come up with his formula? because it is an exact duplicate of that question.

Browse other questions tagged or ask your own question.