- #1
1MileCrash
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Homework Statement
Consider two uniform spherical planets of equal density but unequal radius. Which of the following quantities is the same for both planets?
Homework Equations
The Attempt at a Solution
I can't really attempt to solve it because it's not really a "problem."
The escape velocity from the planet's surface.
The acceleration due to gravity at the planet's surface.
The orbital period of a satellite in a circular orbit just above the planet's surface.
The orbital period of a satellite in a circular orbit at a given distance from the planet's center.
None of the above.
I can't find any equations having to do with any of things things that don't rely on either density or radius.