Moment of Inertia (I) Calculation
Calculate the moment of inertia for different shapes.
kg
m
Result
0,75 kg·m²
Moment of inertia: 0,75 kg·m²
Result in all units
Step-by-step solution
I = k·m·r²
What Is Moment of Inertia?
The moment of inertia expresses a body's resistance to rotation. It depends on the mass and on the distribution of that mass about the axis of rotation.
How is it calculated?
How Is It Calculated?
The formula changes according to the shape of the body; for example, for a point mass I = m × r².
- Enter the type of body, its mass and its radius.
- The relevant shape formula is applied.
Frequently Asked Questions
What happens when the mass moves away from the axis?
Since the moment of inertia increases with the square of the mass's distance from the axis, it grows significantly.