IYPT 1995, Задачи на турнира — Задача 8. Carpet

8th IYPT (1995)

Заглавие в източника

Sources: Školská Fyzika, 1994/1995, 3, 70—71, Rozhledy mat.-fyz. 72, 1995, 2, 102—104, Dev. Tal. in Phys., 93—94, 1995
Selected at the Preparatory Seminar in Warsaw on Oct. 13—15, 1994
Exemplary solutions for 1995 →

Условие

When a carpet is rolled into a cylinder it sometimes unrolls by itself or with the help of a gentle push. Determine the factors on which the speed of the rolling carpet depends.

Решение

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Оригинал в Архива: 1995.txt