- #1
Mikemorgan12
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Homework Statement
Not give any information just the equation Fg= G m1m2/r^2
Supposed to find the distance at which the moons gravity has a greater force on a spacecraft than the Earth does.
Homework Equations
My prof told me to put G m1m2/r^2= G m1m2/r^2 and substitute one r in for another i.e. (r-r2)^2
The Attempt at a Solution
I put the two equations equal to each other and got rid of what I could
mE/r^2= mM/(r-r2)2
I try to plug numbers in and get a quadratic but I keep getting a square root of a negative number or i just get the actual distance from the Earth to the moon 3.85x108 m
Help would be greatly appreciated have been working on this for a few days now.