Plaskett's binary system consists of two stars that revolve in a circular orbit about a center of mass midway between them. This statement implies that the masses of the two stars are equal (see figure below). Assume the orbital speed of each star is |3| = 170 km/s and the orbital period of each is 13.7 days. Find the mass M of each star. (For comparison, the mass of our Sun is 1.99 x 1030 kg.) |:] solar masses :3 , , 3k M I] f \\ f \\ i l . XCM ,' \\ / // M * ' ' ? (a