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this question is simple, I was looking for a good derivation to Gauss' Law of gravitation $$\int \vec g.d\vec A=-4\pi GM $$ but was unable to find a good enough one online. Hence may I know its derivation?

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    $\begingroup$ Its identical to the Electrostatic derivation, if you swap $ 1/4 \pi \epsilon_0 $ for G, and take into account that positive mass is analogous to negative charge when it comes to the direction of the force. $\endgroup$ – JohnyO42 Aug 9 '20 at 9:36
  • $\begingroup$ @JohnyO42 i will check out the electrostatic derivation, thank you! $\endgroup$ – Lucas Tan Aug 9 '20 at 10:10
  • $\begingroup$ Essentially a duplicate of physics.stackexchange.com/q/38404/2451 $\endgroup$ – Qmechanic Aug 9 '20 at 11:36