  The mechanics of structured particles (SP) consisting from potentially
interacting material points are discussed. For this purpose the derivation of
the SP equation motion in the field of external forces is submitted. The
differences between the properties of the dynamics of material point and
properties of the dynamics of SP are analyzed. The explanation of how mechanics
of the $SP$ leads to the account of dissipative forces is submitted. The
derivation of Lagrange, Hamilton and Liouville equations for $SP$ Is shown. The
question of why the motions of the SP are determined by the two types of
symmetry: internal symmetry of the system and symmetry of space and how it
leads to two types of energy and forces accordingly are discussed. It is shown
how the concept of entropy arises in classical mechanics. The question how the
mechanics of the SP leads to thermodynamics, statistical physics and kinetics
is explained.
