A spacecraft is on a journey to the moon. At what point, asmeasured from the center of the earth, does the gravitational forceexerted on the spacecraft by the earth balance that exerted by themoon? This point lies on a line between the centers of the earthand 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 asthat of the moon.