Задача 40854.

Material point of mass 0.20 kg is involved in two equally directed vibrations. The vibration equations: x1 = 4cos (3t + 0,4pi), mm; x2 = 3cos (3t + 0,9pi), mm. Write the equation of the resulting vibrations. To determine the total energy of a material point.

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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