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Консультация № 199628
16.11.2020, 20:08
0.00 руб.
1
1
1
Здравствуйте! Прошу помощи в следующем вопросе:
Здравствуйте, уважаемые эксперты! Прошу вас ответить на следующий вопрос:
Частица из состояния покоя начала двигаться по дуге окружности радиуса R = 1м со скоростью, модуль которой зависит от времени по закону w = A t/T. Найти отношение нормального и тангенциального ускорения частицы через время t = 1c, если T = 1c. А = 6 с ^-1.
а) 2; б) 3; в) 4; г) 5 ; д) 6
Заранее спасибо!
Здравствуйте, уважаемые эксперты! Прошу вас ответить на следующий вопрос:
Частица из состояния покоя начала двигаться по дуге окружности радиуса R = 1м со скоростью, модуль которой зависит от времени по закону w = A t/T. Найти отношение нормального и тангенциального ускорения частицы через время t = 1c, если T = 1c. А = 6 с ^-1.
а) 2; б) 3; в) 4; г) 5 ; д) 6
Заранее спасибо!
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Обсуждение
21.11.2020, 18:13
общий
это ответ
Здравствуйте, ALX5!
С учётом исходных данных модуль угловой скорости частицы меняется по закону
Тогда линейная скорость частицы будет равна
а нормальное и тангенциальное ускорения будут определяться выражениями
откуда их отношение в момент времени t составит
В частности, при t = 1 с получаем
то есть правильный ответ - д).
С учётом исходных данных модуль угловой скорости частицы меняется по закону
Тогда линейная скорость частицы будет равна
а нормальное и тангенциальное ускорения будут определяться выражениями
откуда их отношение в момент времени t составит
В частности, при t = 1 с получаем
то есть правильный ответ - д).
5
Спасибо за помощь!
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