Предмет: Физика, автор: semononoprienko

Кран поднимает балку на высоту 30 м, вес балки равен 19 кН. Вычислите работу, совершаемую краном.
ПОМОГИТЕ СРОЧНО, ДАЮ 22 БАЛА

Ответы

Автор ответа: салаваттт
0
формула А=Р*H
                работа=вес*высота
A=19 000 H* 30 метров = 570000 H = 570кH
ответ: 570 кН работа крана
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