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Консультация № 192298
02.01.2018, 15:54
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Здравствуйте! У меня возникли сложности с таким вопросом:
Шарик массой m, который подвешен на невесомой нерастяжимой нити длиной L, отводят на угол β и отпускают. В момент прохождения положения равновесия он упруго сталкивается с боковой поверхностью бруска массой M, который движется вдоль наклонной плоскости с углом α к основанию снизу вверх с начальной скоростью v0. Удар центральный, абсолютно упругий. Коэффициент трения между бруском и плоскостью равен k.До сталкивание брусок прошел некоторый путь. После взаимодействия брусок прошел вниз путь S1.
Найти путь, который прошел брусок до взаимодействию.
Шарик массой m, который подвешен на невесомой нерастяжимой нити длиной L, отводят на угол β и отпускают. В момент прохождения положения равновесия он упруго сталкивается с боковой поверхностью бруска массой M, который движется вдоль наклонной плоскости с углом α к основанию снизу вверх с начальной скоростью v0. Удар центральный, абсолютно упругий. Коэффициент трения между бруском и плоскостью равен k.До сталкивание брусок прошел некоторый путь. После взаимодействия брусок прошел вниз путь S1.
Найти путь, который прошел брусок до взаимодействию.
Обсуждение
03.01.2018, 09:22
общий
Что-то есть мутное в этом вопросе, сразу и не поймешь, ну, во-первых, в момент удара брусок уже остановился или еще движется; во-вторых, и вот это вот самое неприятное, пожалуй, ... как может быть удар центральным, если брусок движется по наклонной плоскости, а шарик ударяется об него в момент прохождения положения равновесия, т.е. двигаясь по горизонтали??? Кто составил задачу, автор, поинтересуйтесь, пожалуйста,
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Об авторе:
С уважением
shvetski
С уважением
shvetski
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