Development of Scientific Bases of the Dynamics of Machines as a Section of Applied Mechanics

The characteristic of the inertia forces within the classification of forces during solving the problems of the mechanics of machines was given. This characteristic is based on the simultaneous and unconditional compliance with the laws of Newton and the law of the energy conservation. It is proved that every potential field of motion of a physical body corresponds to a potential velocity field and the poles of these fields are located in the same point in space. For an absolutely rigid body moving with a variable velocity the inertia force is the internal potential force and potential of the inertia force is the velocity of the physical body.