Calculating Moment of Inertia: Inverted stick Let's calculate moment of inertia of the stick with the weight at the top : m = 0.1kg To simplify things, let's assume that the stick itself does not have any mass and all the mass in Length from this system is concentrated at the weight itself. point of rotation to weight, r = What is the momentof inertia of the mass on 0.5 m the stick? | = m * 2= 0.1 * 0.52 = 0.025 kg*me