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Консультация № 161742
01.03.2009, 21:52
60.00 руб.
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Здравствуйте уважаемые эксперты!Просьба решить несколько задачек...
Точка участвует в двух колебаниях одинакового периода с одинаковыми начальными фазами. Амплитуды колебаний xm1 = 3 см и xm2 = 4 см. Найти амплиту-ду результирующего колебания, если: а) колебания совершаются в одном направле-нии, б) колебания взаимно перпендикулярны.
В заранее примнога благодарен
Точка участвует в двух колебаниях одинакового периода с одинаковыми начальными фазами. Амплитуды колебаний xm1 = 3 см и xm2 = 4 см. Найти амплиту-ду результирующего колебания, если: а) колебания совершаются в одном направле-нии, б) колебания взаимно перпендикулярны.
В заранее примнога благодарен
Обсуждение
02.03.2009, 08:46
общий
это ответ
Здравствуйте, Масленников Александр!
Поскольку периоды и начальные фазы колебани одинаковы, их амплитуды достигаются одновремённо. В случае а) амплитуда результирующего колебания равна арифметической сумме обеих амплитуд: xmа = xm1 + xm2 = 3 + 4 = 7 см. В случае б) амплитуда результирующего колебания определяется по теореме Пифогора: xmб = √(xm12 + xm22) = √(32 + 42) = 5 см.
Поскольку периоды и начальные фазы колебани одинаковы, их амплитуды достигаются одновремённо. В случае а) амплитуда результирующего колебания равна арифметической сумме обеих амплитуд: xmа = xm1 + xm2 = 3 + 4 = 7 см. В случае б) амплитуда результирующего колебания определяется по теореме Пифогора: xmб = √(xm12 + xm22) = √(32 + 42) = 5 см.
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