Mass moments of inertia calculator
The moment of inertia, otherwise known as the angular mass or rotational inertia, is a measure of an object’s resistance to change in rotation direction. Moment of Inertia has the same relationship to angular acceleration as mass has to linear acceleration.
- Moment of Inertia of a body depends on the distribution of mass in the body with respect to the axis of rotation
For a point mass the Moment of Inertia is the mass times the square of perpendicular distance to the rotation reference axis and can be expressed as
I = m r2
Where
I = moment of inertia (kg m2)
m = mass (kg)
r = distance between axis and rotation mass (m)