Calculations of inertia are important, for example, for the manufacture of mechanisms.
The transition from one energy conversion system to another is impossible without the real physical parameters of the inertia of any object (for example, meters and millimeters to the fourth degree).
When calculating building structures, inertia in mm4 and m4 is a practical calculation method.
A general view drawing is a document that defines the design of the product, the interaction of its components and explains the principle of operation of the product.
The work of the m4 and mm4 programs determines the meaning of the power of knowledge.