Convert kilogram square millimetre to kilogram square metre
Kilogram Square Millimetre
The kilogram square millimetre (kg·mm²) is a unit of moment of inertia equal to 10⁻⁶ kg·m². It is used in precision mechanical engineering and instrument design for very small rotating components such as micro-motors, watch mechanisms, and miniature turbines. One kg·mm² = 10⁻⁶ kg·m².
Kilogram Square Metre
The kilogram square metre (kg·m²) is the SI unit of moment of inertia (also called rotational inertia), representing the resistance of a body to changes in its rotational motion. It is defined as the sum of the products of each mass element and the square of its distance from the rotation axis. The kg·m² appears in rotational analogs of Newton's second law, where torque equals moment of inertia times angular acceleration.