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Non-Linear Forces and Irreversibility Problem in Classical Mechanics

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DOI: 10.4236/jmp.2014.51003    2,715 Downloads   3,858 Views   Citations


Restrictions of classical mechanics which take place because of holonomic constraints hypothesis used for obtaining canonical Lagrange equation are analyzed. As it was shown that this hypothesis excludes non-linear terms in the expression for forces which are responsible for energy exchange between different degrees of freedom of a many-body system. An oscillator passing a potential barrier is considered as an example which demonstrated this fact. It was found that the oscillator can pass the barrier even if kinetic energy of its mass center is below the potential barrier’s height due to non-linear terms. This effect is lost because of holonomic constraints hypothesis. We also explained how one can derive a system’s motion equation without the use of holonomic constraints hypothesis. This equation can be used to describe non-linear irreversible processes within the frames of Newton’s laws.

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The authors declare no conflicts of interest.

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V. Somsikov and A. Mokhnatkin, "Non-Linear Forces and Irreversibility Problem in Classical Mechanics," Journal of Modern Physics, Vol. 5 No. 1, 2014, pp. 17-22. doi: 10.4236/jmp.2014.51003.


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