Free Oscillations of a Damped Simple Pendulum: An Analog Simulation Experiment

Author:

Sawkmie Ivan Skhem1,Mahato Mangal C.1

Affiliation:

1. Department of Physics, North-Eastern Hill University, Shillong-793022, India

Abstract

The frequency of free oscillation of a damped simple pendulum with large amplitude depends on its amplitude unlike the amplitude-independent frequency of oscillation of a damped simple harmonic oscillator. This aspect is not adequately emphasized in the undergraduate courses due to experimental and theoretical difficulties. We propose an analog simulation experiment to study the free oscillations of a simple pendulum that could be performed in an undergraduate laboratory. The needed sinusoidal potential is obtained approximately by using the available AD534 IC by suitably augmenting the electronic circuitry. To keep the circuit simple enough we restrict the initial angular amplitude of the simple pendulum to a maximum of [Formula: see text]. The results compare well qualitatively with the theoretical results. The small quantitative discrepancy is attributed to the inexact nature of the used “sinusoidal potential”.

Publisher

World Scientific Pub Co Pte Lt

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