Gravitation Equations to Know

Fg=Gm1m2r2Fg=\frac{Gm1m2}{r^{2}}

g=Gmr2g=\frac{Gm}{r^{2}}

Ug=−Gm1m2rUg=-\frac{Gm1m2}{r}

Escape Velocity: 2⋅Gmr\sqrt{\frac{2\cdot Gm}{r}}

Orbital Velocity:Gmr\sqrt{\frac{Gm}{r}}

T=2πrvT=\frac{2\pi r}{v}

v=2πrTv=\frac{2\pi r}{T}

r=Gm4π23r=\sqrt[3]{\frac{Gm}{4\pi^2}}