IYPT 2018, Задачи на турнира — Задача 3. Dancing Coin

Problems for the 31st IYPT 2018

Release note and epigraph

Released by the IOC on July 13th, 2017

The originator of a new concept finds, as a rule, that it is much more difficult to find out why other people do not understand him, than it was to discover the new truth.

Hermann von Helmholtz

Условие

Take a strongly cooled bottle and put a coin on its neck. Over time you will hear a noise and see movements of the coin. Explain this phenomenon and investigate how the relevant parameters affect the dance.

Решение

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Оригинал в Архива: 2018.pdf