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Консультация № 196258
30.08.2019, 15:20
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Здравствуйте! У меня возникли сложности с таким вопросом:
На железнодорожной тележке массой M жёстко закреплён вертикальный щит, повернутый на угол a
от перпендикулярного рельсам положения . В щит бросают мешок с песком массой m, горизонтальная составляющая начальной скорости которого равна v0 и перпендикулярна рельсам. Найдите скорость v
тележки в после того, как мешок, ударившись о щит, сполз по нему вниз и упал на тележку. Силу трения при скольжении мешка по щиту и тележке и силу сопротивления движению тележки считайте
пренебрежимо малыми. До удара тележка была неподвижна.
На железнодорожной тележке массой M жёстко закреплён вертикальный щит, повернутый на угол a
от перпендикулярного рельсам положения . В щит бросают мешок с песком массой m, горизонтальная составляющая начальной скорости которого равна v0 и перпендикулярна рельсам. Найдите скорость v
тележки в после того, как мешок, ударившись о щит, сполз по нему вниз и упал на тележку. Силу трения при скольжении мешка по щиту и тележке и силу сопротивления движению тележки считайте
пренебрежимо малыми. До удара тележка была неподвижна.
Обсуждение
18.09.2019, 09:13
общий
Адресаты:
В задаче, которая была разобрана по ссылке, скорость мешка была направлена вдоль направления рельс. В этой же задаче скорость мешка перпендикулярна рельсам, и первая часть решения будет принципиально другой.
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