This document discusses moment of inertia, which is a property of an object's shape that represents its resistance to changes in motion. It defines moment of inertia as the second moment of a force or area. The document explains how to calculate the moment of inertia of different beam sections using thin strips and the parallel axis theorem. It also discusses finding the neutral axis, which is the axis where compressive and tensile forces balance. Sample problems are provided to demonstrate calculating moment of inertia for different laminate shapes.