. Distance between the centers of two stars is 10a. The masses of these stars are M and 16M and their radii a and 2a respectively

Distance between the centers of two stars is 10a. The masses of these stars are M and 16M and their radii a and 2a respectively. A body of mass m is fired straight from the surface of the larger star towards the surface of the smaller star. What should be its minimum initial speed to reach the surface of the smaller star? Obtain the expression in terms of G, M and a