Article Dans Une Revue American Journal of Physics Année : 2018

Oscillations in a half-empty bottle

Résumé

When a half-empty bottle of water is pushed to roll on a flat surface, the oscillations of the fluid inside the bottle induce an overall jerky motion. These velocity fluctuations of the bottle are studied through simple laboratory experiments accessible to undergraduate students and can help them grasp fundamental concepts in mechanics and hydrodynamics. We first demonstrate through an astute experiment that the rotation of the fluid and the bottle are decoupled. The equations of motion are then derived using a mechanical approach while the hydrodynamics of the fluid motion is explained. Finally the theory is tested against two benchmark experiments.

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hal-02408710 , version 1 (13-12-2019)

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Andréane Bourges, Amélie Chardac, Aude Caussarieu, Nicolas Plihon, Nicolas Taberlet. Oscillations in a half-empty bottle. American Journal of Physics, 2018, 86 (2), pp.119-125. ⟨10.1119/1.5009664⟩. ⟨hal-02408710⟩
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