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Консультация № 200833
16.05.2021, 14:37
0.00 руб.
1
1
1
Здравствуйте! У меня возникли сложности с таким вопросом:
Тело вращается вокруг закрепленной оси с угловой скоростью, зависимость от времени которой задается графиком. Момент инерции тела относительно оси вращения равен I. На сколько отличаются модули моментов сил, действующих на тело в моменты времени t1=1 и t2=3. W max = 3c^-1. I=4
Тело вращается вокруг закрепленной оси с угловой скоростью, зависимость от времени которой задается графиком. Момент инерции тела относительно оси вращения равен I. На сколько отличаются модули моментов сил, действующих на тело в моменты времени t1=1 и t2=3. W max = 3c^-1. I=4
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Обсуждение
16.05.2021, 19:48
общий
это ответ
Здравствуйте, Nata!
Предлагаю Вам следующее решение задачи.
Дано: график зависимости
угловой скорости тела вокруг закреплённой оси от времени; 
кг.м2 -- момент инерции тела относительно оси вращения; 
с-1 -- максимальное значение угловой скорости тела; 
с, 
с -- моменты времени.
Определить:
-- разность модулей моментов сил, действующих на тело в моменты времени 
и 
Согласно основному уравнению динамики вращательного движения,
где 
-- угловые ускорения тела в моменты времени 
соответственно. Из заданного графика видно, что 
(с-2), 
(с-2). При этом 
(Н.м), 
(Н.м),
(Н.м).
Ответ:
Н.м.
Предлагаю Вам следующее решение задачи.
Дано: график зависимости
угловой скорости тела вокруг закреплённой оси от времени; кг.м2 -- момент инерции тела относительно оси вращения; с-1 -- максимальное значение угловой скорости тела; с, с -- моменты времени.Определить:
-- разность модулей моментов сил, действующих на тело в моменты времени и Решение
Согласно основному уравнению динамики вращательного движения,
где -- угловые ускорения тела в моменты времени соответственно. Из заданного графика видно, что (с-2), (с-2). При этом (Н.м), (Н.м), (Н.м).Ответ:
Н.м.
5
Об авторе:
Facta loquuntur.
Facta loquuntur.
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