Предмет: Физика, автор: INeedYourWisdom

Какую работу надо совершить, чтобы из колодца глубиной 10 м поднять ведро с водой массой 8 кг на тросе, каждый метр которого имеет массу 400 г?
Решение есть, но может кто-нибудь объяснить, почему, находя работу необходимую для понятия троса, умножаем на h/2

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Автор ответа: Olya880

потому что на высоте h/2 находится центр массы троса.

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