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Консультация № 188363
08.12.2015, 20:59
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Здравствуйте! Прошу помощи в следующем вопросе:
Колесо радиусом 1 м вращается вокруг неподвижной оси согласно уравнению f=2t+t(в третей степени). Найти нормальное и касательное ускорение точек, лежащих на ободе колеса, через 1 с после начала движения.
Колесо радиусом 1 м вращается вокруг неподвижной оси согласно уравнению f=2t+t(в третей степени). Найти нормальное и касательное ускорение точек, лежащих на ободе колеса, через 1 с после начала движения.
Обсуждение
08.12.2015, 21:11
общий
Адресаты:
Сначала не мешает разобраться с тем, что обозначено через f.
Об авторе:
Facta loquuntur.
Facta loquuntur.
09.12.2015, 12:51
общий
скорость это первая производная по уравнению движения
v = 3t^2+2
Касательное ускорение это производная по скорости
a = 6t подставим значение и получим а = 6
Нормлаьное ускорение это
an = v^2/r подставим значение и получим 25
v = 3t^2+2
Касательное ускорение это производная по скорости
a = 6t подставим значение и получим а = 6
Нормлаьное ускорение это
an = v^2/r подставим значение и получим 25
Об авторе:
to live is to die
to live is to die
09.12.2015, 14:22
общий
Адресаты:
Вы, наверное, шутите? В задаче рассматривается вращательное движение.
А f - скорее всего, угол поворота. Но автор вопроса не отвечает....
А f - скорее всего, угол поворота. Но автор вопроса не отвечает....
Об авторе:
Facta loquuntur.
Facta loquuntur.
09.12.2015, 14:25
общий
Адресаты:
Уважаемый, если Вас по-прежнему интересует эта задача, отвечайте на вопросы в мини-форуме и участвуйте в её обсуждении!
Об авторе:
Facta loquuntur.
Facta loquuntur.
09.12.2015, 17:03
общий
Ну, при радиусе в 1 метр путь в метрах и угол в радианах совпадают 
Но оформить это и вправду не помешает.
Но оформить это и вправду не помешает.
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