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      Etude des effets non lin\'eaires observ\'es sur les oscillations d'un pendule simple

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          Abstract

          In this paper we present a study of the non-linear effects of anharmonicity of the potential of the simple pendulum. In a theoretical reminder we highlight that anharmonicity of the potential generates additional harmonics and the non-isochronism of oscillations. These phenomena are all the more important as we move away from the oscillations at small angles, which represent the domain of validity of the harmonic approximation. The measurement is apprehended by means of the acquisition box SYSAM-SP5 coupled with the Latis pro software and the Eurosmart pendulum. We show that only a detailed analysis by fitting the recorded curve can provide sufficient accuracy to describe the quadratic evolution of the period as a function of the amplitude of the oscillations. We we can detect the additional harmonics in the oscillations when the amplitude becomes very high.

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          Author and article information

          Journal
          25 November 2019
          Article
          1911.11594
          e5d3cf0c-e5d8-4ad9-9bba-2ad38149c516

          http://arxiv.org/licenses/nonexclusive-distrib/1.0/

          History
          Custom metadata
          Bulletin de l'Union des Physiciens 101, 167 (2007)
          in French
          physics.ed-ph

          General physics
          General physics

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