1. The problem statement, all variables and given/known data A spacecraft is on a journey to the moon. At what point, as measured from the center of the earth, does the gravitational force exerted on the spacecraft by the earth balance that exerted by the moon? This point lies on a line between the centers of the earth and the moon. The distance between the earth and the moon is 3.85 × 108 m, and the mass of the earth is 81.4 times as great as that of the moon. 2. Relevant equations F= GM(e)m/r^2 3. The attempt at a solution The only thing I've been able to come up with so far on this problem is to just set up a graph showing the two forces head to tail, i know that the moon's Force should be negative since it is attracting in the opposite direction of the earth? Any thoughts where to get started?