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Консультация № 200800
08.05.2021, 02:37
0.00 руб.
08.05.2021, 17:56
0
1
1
Здравствуйте, уважаемые эксперты! Прошу вас ответить на следующий вопрос:
На барабан радиусом R = 0,5 м намотан шнур, к концу которого привязан груз m1 = 10 кг. Найти момент инерции барабана, когда известно, что груз опускается с ускорением а = 2,04 м/с2.
На барабан радиусом R = 0,5 м намотан шнур, к концу которого привязан груз m1 = 10 кг. Найти момент инерции барабана, когда известно, что груз опускается с ускорением а = 2,04 м/с2.
Обсуждение
08.05.2021, 06:43
общий
08.05.2021, 06:44
это ответ
Здравствуйте, mojo!
Предлагаю Вам следующее решение задачи.
Дано:
м -- радиус барабана; 
кг -- масса груза, привязанного к барабану; 
м/с2 -- ускорение груза.
Определить:
-- момент инерции барабана.
Выполним рисунок.
В проекциях на вертикальную ось, согласно второму закону Ньютона, получим для груза
откуда 
-- сила натяжения шнура. С такой же по величине силой, но в противоположном направлении шнур действует на барабан, ускоряя его. Из основного уравнения динамики вращательного движения получим
(кг[$183$]м2).
Ответ:
кг[$183$]м2.
Предлагаю Вам следующее решение задачи.
Дано:
м -- радиус барабана; кг -- масса груза, привязанного к барабану; м/с2 -- ускорение груза.Определить:
-- момент инерции барабана.Решение
Выполним рисунок.
В проекциях на вертикальную ось, согласно второму закону Ньютона, получим для груза
откуда -- сила натяжения шнура. С такой же по величине силой, но в противоположном направлении шнур действует на барабан, ускоряя его. Из основного уравнения динамики вращательного движения получим (кг[$183$]м2).Ответ:
кг[$183$]м2.
Об авторе:
Facta loquuntur.
Facta loquuntur.
Форма ответа
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