1. The problem statement, all variables and given/known data Derive the formula for rod's moment of inertia: I = ml2/12 2. Relevant equations I = ml2/12 3. The attempt at a solution The only one derivation I know of is dividing the rod into two parts and then integrating from 0 to l/2. However' I'd love to know if there's some easier (or more "natural"?) way to do it? Or, if not, maybe you know some website where it's explained as if I were five so that I can get the grasp of it? Because looking at bare integrals, I don't quite know what I'm calculating.