1. The problem statement, all variables and given/known data See Attachment Calculate the force of gravity on the point mass due to the line mass in terms of the gravitational constant G, m, M, D, and L. The line mass has a uniform density. 2. Relevant equations 3. The attempt at a solution Ok so apparently I'm suppose to consider the point at were the point mass is to be the origin of the Cartesian coordinate system. To the right of this point is positive. Up from this point is positive. Below this point is negative. If the dotted line is extended through the line mass than the y components of the gravity contributed by the infinitismal masses were cancel each other out directly. See Attachment I get (G m M L)/(D sqrt(D^2 + L^2/4) ) in my paper I accidentally put (G m M L)/(D^2 sqrt(D^2 + L^2/4) ) by accident for some reason I feel as if this answer is wrong and was wondering if anyone could help me with this problem. I question if I'm really suppose to multiply it by two. It thought that I was suppose to because the horizontal components add together directly.