2. TWO identical stars with radius R and mass M, orbits around their center of maas. The orbit is circular, and the stars are always on the opposite side of the circle. (a) (2 marks} Find the gravitational force of one star on the another. (b) [4 marks} Find the orbital Speed of each star and their periods. (c) (4' marks} How.r much energy would be needed to separate the Mo stars to the innity? Page] of