IYPT 2013, Задачи на турнира — Задача 12. Helmholtz carousel

Problems for the 26th IYPT 2013

Епиграф

There are more things in heaven and earth, Horatio,
Than are dreamt of in your philosophy
Shakespeare

Условие

Attach Christmas tree balls on a low friction mounting (carousel) such that the hole in each ball points in a tangential direction. If you expose this arrangement to sound of a suitable frequency and intensity, the carousel starts to rotate. Explain this phenomenon and investigate the parameters that result in the maximum rotation speed of the carousel.

Решение

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Оригинал в Архива: 2013.pdf