F = G m M /R^2 = m v^2/R
note m, the planet mass, is irrelevant. If you are on a project orbiting earth and drop a wrench, it orbits beside you :)
v^2 = G M/R
Suppose a planet with a mass of 2.14 ✕ 10^25 kg is orbiting a star with a mass of 4.05 ✕ 10^31 kg, and the mean distance between the planet and the star is 1.22 ✕ 10^12 m.
Using Newton's law of universal gravity, determine the speed of the planet when it is at the mean distance from the star.
3 answers
how can you "drop" a wrench in zero gravity?
Asking for a friend ...
Asking for a friend ...
You just set it beside you and it stays there :)
1 answer