IOM 2019, Блиц — Задача 61

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

Условие

Two identical balls are at rest at a given distance. The gravitational force of the left ball acting on the right ball is $F$. What will be the resultant gravitational force acting on the right ball (expressed in $F$) if the third equal ball is put in the middle between the initial two balls?

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