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Nonlinear Sciences > Chaotic Dynamics

arXiv:2111.11677 (nlin)
[Submitted on 23 Nov 2021 (v1), last revised 7 Dec 2021 (this version, v2)]

Title:Multiple pendulum and nonuniform distribution of average kinetic energy

Authors:Tetsuro Konishi, Tatsuo Yanagita
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Abstract:Multiple pendulums are investigated numerically and analytically to clarify the nonuniformity of average kinetic energies of particles. The nonuniformity is attributed to the system having constraints and it is consistent with the generalized principle of the equipartition of energy. With the use of explicit expression for Hamiltonian of a multiple pendulum, approximate expressions for temporal and statistical average of kinetic energies are obtained, where the average energies are expressed in terms of masses of particles. In a typical case, the average kinetic energy is large for particles near the end of the pendulum and small for those near the root. Moreover, the exact analytic expressions for the average kinetic energy of the particles are obtained for a double pendulum.
Comments: 13 pages, 9 figures; refernces added
Subjects: Chaotic Dynamics (nlin.CD); Statistical Mechanics (cond-mat.stat-mech); Classical Physics (physics.class-ph)
Cite as: arXiv:2111.11677 [nlin.CD]
  (or arXiv:2111.11677v2 [nlin.CD] for this version)
  https://doi.org/10.48550/arXiv.2111.11677
Related DOI: https://doi.org/10.1103/PhysRevE.108.014204

Submission history

From: Tetsuro Konishi [view email]
[v1] Tue, 23 Nov 2021 06:50:21 UTC (17,936 KB)
[v2] Tue, 7 Dec 2021 01:47:33 UTC (17,938 KB)
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