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= Eμr = #format jsmath
= E < μ÷r =

Climbing out of a gravity well requires energy.

Assume a spherical planet with mass $M$ and surface radius $r$. The '''standard gravitational parameter''' $\mu$ is the product of the gravitational constant $G$ and $M$ : $\mu = G M $

E < μ÷r

Climbing out of a gravity well requires energy.

Assume a spherical planet with mass M and surface radius r. The standard gravitational parameter \mu is the product of the gravitational constant G and M : \mu = G M

E<μ÷r (last edited 2021-07-17 07:19:46 by KeithLofstrom)