1. The problem statement, all variables and given/known data The gravitational field strength between two objects is the sum of two vectors pointing in opposite directions. Somewhere between the objects, the vectors will cancel, and the total force will be zero. Determine the location of zero force as a fraction of the distance r between the centres of two objects of mass Mass 1 and Mass 2 seperated by distance r 2. Relevant equations Netwon's Universal Law of Gravitation Quadratic Formula 3. The attempt at a solution Here is my work... my problem is that when m1=m2 the equation blows up rather than be x=½ of r, which it should be. Any thoughts on why this is so?