1. The problem statement, all variables and given/known data When finding the gravitational potential of a thick walled hollow cylinder from the point P, located along the X-axis, can I find the Gravitational potential of a solid cylinder and then subtract the gravitational potential of a smaller (inner empty) cylinder? 2. Relevant equations 3. The attempt at a solution This is my attempt to answer a much complicated problem. I just need to make sure that I can subtract the two gravitational potential to find the gp of hollow thick cylinder. Any hint or help would be really appreciated thanks!