Задача 10983.

At the equator, the Earth´s body weight of 100 N, and the equator of a planet 25 N. The average density of the planet is equal to the average density of the Earth, and the planet´s radius is four times less than the radius of the Earth. Determine the rotational period of the planet around its axis.

Detailed solution with a short recording conditions, laws and formulas used in the decision, the withdrawal of the calculation formula and the answer.
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