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Hayden_
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Homework Statement
A planet of mass M has a moon of mass m in a circular orbit of radius R. An object is placed between the planet and the moon on the line joining the center of the planet to the center of the moon so that the net gravitational force on the object is zero. How far is the object placed from the center of the planet?
Homework Equations
Fg=G(Mm/R^2)
I used the variable d to describe how far the object is placed from the center of the planet
The Attempt at a Solution
G(M(mass of object))/d^2 = G(m(mass of object))/(R-d)^2
G and mass of object cancel out
M/d^2 = m/(R-d)^2