Gravitation

A body of mass (2M) splits into four masses (m, M $- m, m, M - m}, which are rearranged to form a square as shown in the figure. The ratio of {M \over m}$ for which, the gravitational potential energy of the system becomes maximum is x : 1. The value of x is ............ .

Integer / Numeric Answer Type

Enter your answer as a number (integer or decimal).