1. The problem statement, all variables and given/known data A metal sphere, of radius R and cut in two along a plane whose minimum distance from sphere's centre is h, is uniformly charged by a total electric charge Q. What force is necessary to hold the two parts of the sphere together? 2. Relevant equations Elestrostatic equations 3. The attempt at a solution After the cut, the charges would get redistributed along the section, right? I figured a spherical cap repelling the other piece as they would get the same charge signal, so the neccessary force to hold them both is the repelling force F, F = EQ E is the electric field How can I calculate this E through the spherical cap??