Задача 40515.

Find the quality factor of the pendulum, which is a small ball suspended on a long string l = 0,5 m, if during the observation time t = 1,5 m its total mechanical energy decreased n = 36 times. The difference frequency of its own and damped oscillations neglected.

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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