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Консультация № 194916
09.03.2019, 11:43
0.00 руб.
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2
1
Здравствуйте! У меня возникли сложности с таким вопросом:
Колесо радиусом R = 0,50 м начинает вращаться вокруг неподвижной оси с постоянным угловым ускорением ε = 0,20 рад/с2. Найти полное ускорение a точки на ободе колеса в момент, когда оно заканчивает делать третий оборот.
Колесо радиусом R = 0,50 м начинает вращаться вокруг неподвижной оси с постоянным угловым ускорением ε = 0,20 рад/с2. Найти полное ускорение a точки на ободе колеса в момент, когда оно заканчивает делать третий оборот.
Обсуждение
09.03.2019, 11:44
общий
Обратите внимание на мою консультацию пожалуйста.
Об авторе:
Лучшая увеличительная линза - ноги.
Лучшая увеличительная линза - ноги.
09.03.2019, 12:32
общий
это ответ
Здравствуйте, dar777!
В момент, когда колесо заканчивает делать третий оборот, оно повернётся на угол
(радиан);
при этом от момента начала вращения колеса пройдёт время
(с).
За это время нормальное ускорение точки на ободе колеса станет равным
(м/с2),
а тангенциальное ускорение (оно постоянно всё время, пока постоянно угловое ускорение) имеет величину
(м/с2).
Значит, в рассматриваемый момент времени величина полного ускорения точки на ободе колеса равна
(м/с2).
В момент, когда колесо заканчивает делать третий оборот, оно повернётся на угол
(радиан);при этом от момента начала вращения колеса пройдёт время
(с).За это время нормальное ускорение точки на ободе колеса станет равным
(м/с2),а тангенциальное ускорение (оно постоянно всё время, пока постоянно угловое ускорение) имеет величину
(м/с2).Значит, в рассматриваемый момент времени величина полного ускорения точки на ободе колеса равна
(м/с2).
5
Это самое лучшее решение!
Об авторе:
Facta loquuntur.
Facta loquuntur.
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