How to find the mass of a sphere in a problem

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To find the mass of two spheres with a known distance and gravitational force, the gravitational force equation Fg = (G)(m1)(m2)/r^2 is used, where G is the gravitational constant. Given that one sphere's mass is twice that of the other, let m1 be the lighter sphere and m2 be the heavier sphere, so m2 = 2m1. The distance between the centers is 2.5 m, and the force is 2.70 x 10^-12 N. The correct approach involves substituting m2 into the equation and solving for m1, which leads to the correct masses of the spheres. Accurate calculations and substitutions are crucial for obtaining the correct answer.
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Two spheres are placed so that their centers are 2.5 m apart. The force between the two spheres is 2.70 10-12 N. What is the mass of each sphere if one sphere is twice the mass of the other sphere?
1 . ______kg (lighter sphere)
2 ._______ kg (heavier sphere)


the equation i used:
Fg= (G)(m1)(m2)/r^2

I got

1. .25
2. .5

but the answer was wrong. does anyone know how to plug this in correctly?
 
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