Instantly calculate the moment of inertia of a point mass relative to an axis of rotation, often conceptualized with a rod. Our free online calculator uses the fundamental formula I = mr² to help students and engineers quickly determine rotational inertia. Perfect for solving complex physics problems and optimizing mechanical designs.
Formula:
The moment of inertia (I) for a point mass (m) at a perpendicular distance (r) from an axis of rotation is given by the formula:
I = m × r2
Where:
- I = Moment of Inertia (kg·m²)
- m = Mass of the point mass (kg)
- r = Perpendicular distance from the point mass to the axis of rotation (m)