Задача 40427.

Pendulum clock with a second surface of the Earth are exactly. How many hours will keep for a day, if they are to lift to a height of 5 km above the Earth´s surface? 6400 km radius of the Earth.

Detailed solution shorthand terms, formulas, laws used in the decision, the withdrawal of the calculation formula and the response.
If you have any questions to address, please. I´ll try to help.