Предмет: Физика, автор: momunkulovali13

Помогите пожалуйста по физике дам 20 балов


шагающий экскаватор поднимает за один прием 14м3 грунта, поднимая его на высоту 20м. Масса ковша 2т. Определите работу, совершаемую при подъеме грунта и ковша.


momunkulovali13: Плотность грунта 1500кг/м3

Ответы

Автор ответа: dimonxr
0

а где густина грцнта? ну лан, дано

s 20

m 2 t

m2 14м3

решение

a = fs = mgs = 2000*20*10= 400000дж

Ну и нужно густину умножить на 14м3

и додать 400000 дж + то что выйдет и вот тебе ответ.

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