A two-star system spins in a circular path around the center of mass in the middle of the distance between them. This means that the masses of the two stars are equal, as in the figure. Suppose that the orbital velocity of each star v = 220 km / s and the periodic time of each one 14.4 days find the mass M for each star (compared to the sun’s mass, M= 1.99 x 10^30 kg).             ReplyForward

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