Recent content by iwantcoal

What is R? Radius? And I'm doing the unneeded math as a part of a presentation, so I'm open to any formula that works.

Sadly as I stated in OP, the planet I was calculating for was more similar to Ganymede than earth. Same principle though. I substituted the M, and got r = (3g)/(4Gπρ) is that correct? I'm not very good at math...

I can understand most of the formula, except the d: does it mean density (which should be ρ) or diameter? Distance (but wouldn't that be r)?

I do know all the formulas, I just don't know how they can be combined to solve for two unknowns (radius and mass). Hints please. Also, I heard that when densities are equal, r1 g1 --- = --- r2 g2 where r1 and r2 are the radii of the planets being...

About: As a project, I'm trying to solve for the approximate radius and mass of a approximately earth-sized planet, Mann, from Interstellar. According to what was provided, g = 7.84m/s2 The solid part of the planet is composed of a honeycomb of rock and ice The space inside the honeycomb is...