The masses and radi of the earth and moon are M,R and Mp, R respesctively. Their centres are at distance d apart. The minimum velocity with which a particle of mass m should be projected from a point milway berween their centres so that it escapes to infinity is (M,+M (R +R) (a) 2-d nd 57. A thin rod of length L is bent to form a semicircle. The mas Whar will be the gravitatiónal potential at th
