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Консультация № 190882
17.04.2017, 00:43
0.00 руб.
18.04.2017, 18:32
1
1
1
Здравствуйте,уважаемые эксперты! У меня возникли сложности со следующим вопросом:
Шайбе, покоящейся в нижней точке сферической ямы радиуса
м, сообщают горизонтальную скорость 
м/с. С какой по величине 
силой шайба действует на дно сразу после завершения удара, если коэффициент трения скольжения шайбы по поверхности ямы 
Масса шайбы 
кг.
Шайбе, покоящейся в нижней точке сферической ямы радиуса
м, сообщают горизонтальную скорость м/с. С какой по величине силой шайба действует на дно сразу после завершения удара, если коэффициент трения скольжения шайбы по поверхности ямы Масса шайбы кг.
Прикрепленные файлы:
Обсуждение
18.04.2017, 14:48
общий
это ответ
Здравствуйте, moonfox!
Я думаю, что задачу можно решить следующим образом.
В вертикальном направлении на шайбу действует сила тяжести
направленная вниз, и составляющая 
реакции сферической поверхности, направленная вверх. Равнодействующая этих сил направленная к центру кривизны сферической поверхности (то есть вверх) и создаёт центростремительное ускорение шайбы. Следовательно,
- величина вертикальной составляющей реакции сферической поверхности. Шайба действует на сферическую поверхность в вертикальном направлении с такой же по величине силой, направленной вниз.
Горизонтальная составляющая реакции сферической поверхности направлена противоположно скорости шайбы и имеет величину
Величина реакции сферической поверхности
(Н).
Шайба действует на дно сразу после удара с силой, имеющей величину приблизительно
Н, и направленной противоположно реакции 
Я думаю, что задачу можно решить следующим образом.
В вертикальном направлении на шайбу действует сила тяжести
направленная вниз, и составляющая реакции сферической поверхности, направленная вверх. Равнодействующая этих сил направленная к центру кривизны сферической поверхности (то есть вверх) и создаёт центростремительное ускорение шайбы. Следовательно,- величина вертикальной составляющей реакции сферической поверхности. Шайба действует на сферическую поверхность в вертикальном направлении с такой же по величине силой, направленной вниз.
Горизонтальная составляющая реакции сферической поверхности направлена противоположно скорости шайбы и имеет величину
Величина реакции сферической поверхности
(Н).Шайба действует на дно сразу после удара с силой, имеющей величину приблизительно
Н, и направленной противоположно реакции
5
все очень подробно и понятно! спасибо,что объяснили)
Об авторе:
Facta loquuntur.
Facta loquuntur.
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