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Консультация № 193505
02.09.2018, 00:49
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Здравствуйте! У меня возникли сложности с таким вопросом:
С колеса автомобиля, движущегося равномерно и прямолинейно, слетел камешек в точке М, в которой радиус с вертикалью составил угол α=30°. На какую высоту H над землей он взлетел относительно неподвижной системы координат, связанной с землей? Радиус колеса R=50 см, скорость автомобиля v=72 км/ч. Сопротивлением воздуха пренебречь. Колесо движется без пробуксовки.
С колеса автомобиля, движущегося равномерно и прямолинейно, слетел камешек в точке М, в которой радиус с вертикалью составил угол α=30°. На какую высоту H над землей он взлетел относительно неподвижной системы координат, связанной с землей? Радиус колеса R=50 см, скорость автомобиля v=72 км/ч. Сопротивлением воздуха пренебречь. Колесо движется без пробуксовки.
Обсуждение
02.09.2018, 08:06
общий
Адресаты:
Для наглядности выполните рисунок. Вычислите скорость камешка относительно неподвижной системы координат, связанной с Землёй, в момент слёта с колеса.
Об авторе:
Facta loquuntur.
Facta loquuntur.
02.09.2018, 14:09
общий
Адресаты:
Можно не переходить к неподвижной системе координат, связанной с Землёй, потому что высота, на которую взлетит камешек, в этой системе координат та же, что и в системе координат, связанной с автомобилем. Нужно лишь вычислить, на какой высоте от поверхности Земли камешек слетит с колеса.
Об авторе:
Facta loquuntur.
Facta loquuntur.
03.09.2018, 08:26
общий
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Так вам и разгонится Даровко Антон рисовать и вычислять 
Об авторе:
Устав – есть устав! Если ты устав – то отдыхай!
Устав – есть устав! Если ты устав – то отдыхай!
03.09.2018, 08:29
общий
Адресаты:
Всё может быть, ведь уже много времени прошло, как автор вопроса начал посещать наш портал, да и этот вопрос он задаёт уже в третий раз, по-моему. 
Об авторе:
Facta loquuntur.
Facta loquuntur.
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