IOM 2019, Блиц — Задача 69

OLYMPIAD OF METROPOLISES, Moscow, September 2, 2019 · 2 септември 2019 г.

Условие

Determine at what minimum initial speed should a body of mass $m$ be pushed so it could make a complete circle round a loop of radius 2 m located in a vertical plane. Neglect friction.

The answer should be given in the SI units unless otherwise stated. If the numerical result turns out to be an integer, it should be given as the answer. Otherwise round the result to the first decimal. $g = 10\ \mathrm{m/s^2}$.

Решение

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Оригинал в Архива: blitz-en-all-task-final.pdf