Moment of Inertia Formulas and Planning Help
The moment of inertia, or also known as the angular mass or rotational inertia, of a rigid body is a tensor that determines the torque needed for a desired angular acceleration about a rotational axis. It depends on the body’s mass distribution and the axis chosen, with larger moments requiring more torque to change the body’s rotation. It is an extensive (additive) property: the moment of inertia of a composite system is the sum of the moments of inertia of its component subsystems (all taken about the same axis). The images bellow will show that visually and there are the formulas also helping you better plan and calculate everything.
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