As it is shown in Eq. 3 the entropy effect is not local to the total energy, and therefore the explicit implementation of the entropy in the classical mechanics of macroscopic bodies required further modification of the concept of conservation of energy. On the other hand, the total energy in thermodynamics is founded on the concept of entropy which results from random fluctuations of microscopic degrees of freedom within the bodies. In principle, part of the total energy of the system is expended to organize and force these Brownian degrees of freedom to move in a specific direction to perform useful work.