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Консультация № 196495
28.09.2019, 17:08
0.00 руб.
0
3
1
Уважаемые эксперты! Пожалуйста, ответьте на вопрос:
Тело, совершающее колебания при наличии вязкого демпфирования, делает 20 полных колебаний в секунду и через l = 50 циклов амплитуда его колебаний уменьшается на 15%. Найти период затухающих колебаний.
Тело, совершающее колебания при наличии вязкого демпфирования, делает 20 полных колебаний в секунду и через l = 50 циклов амплитуда его колебаний уменьшается на 15%. Найти период затухающих колебаний.
Обсуждение
01.10.2019, 09:03
общий
это ответ
Здравствуйте, dar777!
Дано: fд=20 с-1 -- частота затухающих колебаний тела при вязком демпфировании.
Определить: [$964$]д -- период затухающих колебаний.
Решение
Согласно формуле (е) [1, с. 67], искомый период составляет
Ответ: 0,05 с.
Литература
Тимошенко С. П., Янг Д. Х., Уивер У. Колебания в инженерном деле. -- М.: Машиностроение, 1985. -- 472 с.
Дано: fд=20 с-1 -- частота затухающих колебаний тела при вязком демпфировании.
Определить: [$964$]д -- период затухающих колебаний.
Решение
Согласно формуле (е) [1, с. 67], искомый период составляет
[$964$]=2[$960$]/(2[$960$]fд)=1/fд=1/20=0,05 (с).
Ответ: 0,05 с.
Литература
Тимошенко С. П., Янг Д. Х., Уивер У. Колебания в инженерном деле. -- М.: Машиностроение, 1985. -- 472 с.
5
Это самое лучшее решение!
Об авторе:
Facta loquuntur.
Facta loquuntur.
01.10.2019, 10:41
общий
dar777 а 50 циклов не учли)
По-моему, они не нужны, если я правильно понял задачу.
Об авторе:
Facta loquuntur.
Facta loquuntur.
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