Предмет: Физика, автор: nawbaharasamatdinova

. Малый поршень гидравлического пресса площадью 2 см² под действием силы опустился на 16 см. Пло- щадь большого поршня – 8 см². Определите вес груза, поднятого поршнем, если на малый поршень действо- вала сила 200 Н. На какую высоту поднят груз?

ПОЖАЛУЙСТА НАПИШИТЕ ПОЛНЫЕ ОТВЕТ С ДАНО , ДАМ 100 БАЛЛОВ ​

Ответы

Автор ответа: zinovicgrigorij
4

Ответ: 800Н; 4см

Объяснение:

Дано:

S1=2см²

h1=16cм

S2=8cм²

F1=200Н

---------------

Р2-?; h2-?

Согласно закана Паскаля:

F1/S1=P2/S2, где:

F1-сила, действующая на малый поршень;

Р2-вес поднятого груза;

S1 и S2-площади малого и большого поршня.

Отсюда:

Р2=F1*S2/S1=200*8/2=800Н

Объем, на который опустился малый поршень, равен объему, на который поднялся большой поршень:

V1=V2

S1*h1=S2*h2

Тогда:

h2=S1*h1/S2=2*16/8=4cм


toriqws72: спасибо
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