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Консультация № 196042
03.08.2019, 02:10
0.00 руб.
1
1
1
Здравствуйте! Прошу помощи в следующем вопросе:
Шар массой m1, летящий со скоростью v1, сталкивается с неподвижным шаром массой m2. После удара шары разлетаются под углом альфа друг к другу. Удар абсолютно упругий, столкновение происходит в горизонтальной плоскости. Найти скорости шаров u1 и u2 после удара.
Шар массой m1, летящий со скоростью v1, сталкивается с неподвижным шаром массой m2. После удара шары разлетаются под углом альфа друг к другу. Удар абсолютно упругий, столкновение происходит в горизонтальной плоскости. Найти скорости шаров u1 и u2 после удара.
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Обсуждение
07.08.2019, 16:54
общий
это ответ
Здравствуйте, dar777!
Вкратце решение задачи может быть следующим. Обозначим
-- величины импульсов первого шара до удара, первого шара после удара, второго шара после удара соответственно. Тогда из треугольника импульсов в соответствии с законом сохранения импульса и законом сохранения механической энергии получим
Разделив почленно уравнение (2) на уравнение (1), после преобразований получим
из уравнения (2) с учётом выражения (3) получим
(м/с);
а теперь из выражения (3) получим
(м/с).
Вкратце решение задачи может быть следующим. Обозначим
-- величины импульсов первого шара до удара, первого шара после удара, второго шара после удара соответственно. Тогда из треугольника импульсов в соответствии с законом сохранения импульса и законом сохранения механической энергии получим
Разделив почленно уравнение (2) на уравнение (1), после преобразований получим
из уравнения (2) с учётом выражения (3) получим
(м/с);а теперь из выражения (3) получим
(м/с).
5
Это самое лучшее решение!
Об авторе:
Facta loquuntur.
Facta loquuntur.
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