# How to Calculate Moment of Intertia?

Moments of inertia can be found by summing or integrating over every ‘piece of mass’ that makes up an object, multiplied by the square of the distance of each ‘piece of mass’ to the axis. In integral form the moment of inertia is i=∫r2dm i = ∫ r 2 d m.

## How to Calculate Moment of Intertia?

Moment of inertia, also known as rotational inertia, is an important physical quantity used to calculate the total amount of torque needed to rotate an object about a given axis. In this article, we will explain how to calculate moment of inertia, what it is, and how it is used in various engineering applications.

Moment of inertia is a scalar quantity that is proportional to the mass of an object and the square of its distance from the axis of rotation. It is also known as the second moment of area, and is usually denoted as I. The higher the moment of inertia, the more difficult it is to rotate an object about the given axis.

To calculate the moment of inertia, the following equation is used: I = mr2, where m is the mass of the object and r is the distance from the axis of rotation. This equation can be used to calculate the moment of inertia for both point masses and extended objects.

For point masses, the moment of inertia is simply the mass multiplied by the square of its distance from the axis. For extended objects, such as a rod or a cylinder, the moment of inertia is the sum of the moments of inertia of each point mass making up the object. This is