Предмет: Физика, автор: Aloha2467fhiug

3. На рисунке изображен кран с противовесом.
а) На каком расстоянии от оси вращения должна расположиться нагрузка в 5000 Н, чтобы кран оставался в равновесии? [2]
b) Если нагрузка увеличится в 10000 Н, на какое расстояние необходимо переместить груз от оси вращения? [1]
с) Вычислите момент силы.

Приложения:

Ответы

Автор ответа: Dedagenn

Условие равновесия Ргр*Х=Рпр*3, 1)Х=10000*3/5000= 6 м
2) Х= 3 м
3) моменты обеих сил равны Мгр,пр= 30 кНм

Aliza01: везде одиннаково!Нет,чтоб объяснить...!

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