The mass moment of inertia (or simply moment of inertia), plays the role of mass in rotational dynamics, as we saw in Eq. (B.7) above. The mass moment of inertia of a rigid body, relative to a given axis of rotation, is given by a weighted sum over its mass, with each mass-point weighted by the square of its distance from the rotation axis.

How to create a signature stamp in procreateNov 03, 2020 · – How to determine the moment of inertia for a rectangle section also for L section. Units 9 to 17,are assigned to :-Estimation of the Moment of inertia for Right-angled triangle (about X,Y) &Product of inertia &Polar Moment of Inertia, the radius of gyrations, by using two ways of Estimations, for the two cases of a right-angle triangle.

Translating an axis about which you're finding the moment of inertia will change its value... As JTom said, effectively all you need is Mr^2. For a set of discreet masses it is simply the sum of the massese multiplied by their (perpendicular) distance from the axis squared.