Blackburn, The pendulum: a case study in physics (Oxford University Press, Oxford, 2005).
The main advantages of this experiment are its simplicity, low cost and wealth of both physical and mathematical concepts.įrom the theoretical physics point of view, the physical pendulum can be used to understand the behavior of systems acted on restoring forces proportional to the displacement from the equilibrium point, the concept of a rigid body and the determination of its center of mass (CM) and moment of inertia (and the radius of gyration), the use of Steiner's theorem, the effect of damping, among others G.L. Brittle, Physics Education 47, 537 (2012).], which is generally used to get a measurement of the gravitational acceleration g. Weltin, American Journal of Physics 32, 267 (1964). The analysis of the oscillatory behaviour of physical systems is a fundamental part of physics courses at the undergraduate level, where simple harmonic oscillators are studied, both from the theoretical and the experimental point of view.Ī very common experiment in fundamental physics courses, which has been used throughout the years, consists on the analysis of the oscillatory motion of a physical pendulum H.
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