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Консультация № 195462
02.05.2019, 17:21
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Здравствуйте! Прошу помощи в следующем вопросе:
3. Материальная точка, находящаяся на ободе диска радиусом R=80 см вращается согласно уравнению φ=30+0,2t+0,01t3, где φ - угол поворота. Найти зависимость углового ускорения точки от времени. Найти тангенциальное и нормальное ускорение точки на окружности диска для момента времени t=1 c. Как направлено нормальное ускорение? ОБЯЗАТЕЛЬНО СДЕЛАТЬ РИСУНОК.
3. Материальная точка, находящаяся на ободе диска радиусом R=80 см вращается согласно уравнению φ=30+0,2t+0,01t3, где φ - угол поворота. Найти зависимость углового ускорения точки от времени. Найти тангенциальное и нормальное ускорение точки на окружности диска для момента времени t=1 c. Как направлено нормальное ускорение? ОБЯЗАТЕЛЬНО СДЕЛАТЬ РИСУНОК.
Обсуждение
04.05.2019, 08:21
общий
это ответ
Здравствуйте, dar777!
Имеем
-- зависимость угловой скорости точки от времени t;
-- зависимость углового ускорения точки от времени;
(м/с2) -- величина тангенциального ускорения точки в момент времени 
с;
(м/с2) -- величина нормального ускорения в момент времени с.
Вектор нормального ускорения приложен к рассматриваемой точке на ободе диска и направлен в центру вращения диска. Требуемый Вами рисунок находится в прикреплённом файле. Я заимствовал его из Интернета. Чтобы воспользоваться им, примите, что угол поворота диска отсчитывается в направлении по часовой стрелке.
Имеем
-- зависимость угловой скорости точки от времени t; -- зависимость углового ускорения точки от времени; (м/с2) -- величина тангенциального ускорения точки в момент времени с; (м/с2) -- величина нормального ускорения в момент времени с.Вектор нормального ускорения приложен к рассматриваемой точке на ободе диска и направлен в центру вращения диска. Требуемый Вами рисунок находится в прикреплённом файле. Я заимствовал его из Интернета. Чтобы воспользоваться им, примите, что угол поворота диска отсчитывается в направлении по часовой стрелке.
Прикрепленные файлы:
5
Это самое лучшее решение!
Об авторе:
Facta loquuntur.
Facta loquuntur.
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