How to Find Moment of Inertia of a Point Mass?

Steps to find moment of inertia of a point mass.

Moment of Inertia of a Point Mass Calculation

The moment of inertia of point mass m at a distance r from the axis of rotation is given by I = mr2. A point mass does not have a moment of inertia around its own axis, but using the parallel axis theorem a moment of inertia around a distant axis of rotation is achieved.
Let us learn here how to find moment of inertia of a point mass (m) at a distance (r) rotating around its own axis.
How To Calculate Moment Of Inertia Of Point Mass
Formula:
Moment of inertia of point mass I = mr2
Where,
m = Mass
r = Radius
Moment Of Inertia Of Point Mass Formula
Step 1: Assume that the point mass of an object is 20kg at distance 5cm
Moment Of Inertia Of Solid Cylinder Example
Step 2: Applying values in the formula,
Moment of inertia of point mass I = m x r2
I = 20 x 52
I = 20 x 25
I = 500
Moment Of Inertia Of Point Mass Calculation
Moment of Inertia of a Point Mass Calculation using this online Calculator


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