THE GENERALITY OF THE GENERAL EQUATIONS OF DYNAMICS ¹⁾

The general equations of dynamics in theoretical mechanics are referred to as the principle of d'Alembert--Lagrange in analytical mechanics. The generality of these equations lies on the fact that from these equations not only can the general theorems of dynamics be proved, but also can the differential equations of motion for systems with the holomonic or inholomonic constraints be derived, as well as the related integral functional principles.