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kraigandrews
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Homework Statement
2 stars are separated by a distancce r, one star has mass 2/3M the other has mass 2M (M is a solar mass). The period of revolution is 5 years, calculate r.
Homework Equations
Fg=(GM1M2)/r^2
The Attempt at a Solution
Ok so I know that the binary star system revolves around its center of mass point, however I am unsure how to find it, Xcm=(M1X1+M2X2)/(M1+M2) but how is it found without knowing X1 and X2