IYPT 2018, Задачи на турнира — Задача 5. Drinking Straw

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

When a drinking straw is placed in a glass of carbonated drink, it can rise up, sometimes toppling over the edge of the glass. Investigate and explain the motion of the straw and determine the conditions under which the straw will topple.

Решение

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Оригинал в Архива: 2018.pdf