Two stars in a binary system orbit around their center of mass. The centers of the two stars are 7.80 x 10^11 m apart. The larger of the two stars has a mass of 3.50 x 10^30 kg, and its center is 3.00 x 10^11 m from the system's center of mass. What is the mass of the smaller star?

Answer 1

m2= m1/d/x-cm *-1
m2= 3.50e30 kg/ 7.80e11/ 3e11 * -1
m2= 2.9e30