Предмет: Физика, автор: dima2005039

решите плиз Лёгкая по физике

Приложения:

telefons1: какой класс?

dima2005039: 7 ъ

Ответы

Автор ответа: capo2016

Ответ:

81 Н

Объяснение:

По правилу моментов

F₁/F₂ = l₂/l₁.

По условию l₂/l₁ = 10,значит F₁/F₂ = 10.

Т.к. F₂ = 8,1 H,то F₁ = 8,1 * 10 = 81 H.

dima2005039: а ещё решишь?

capo2016: ещё 3 есть?:D...решу 5 задач за 2 дня и получу 100 баллов...2 из 5 есть,хдд

dima2005039: у меня есть ещё 3 задачи

dima2005039: https://znanija.com/task/32328830

dima2005039: а это можешь

dima2005039: https://znanija.com/task/32328849

Автор ответа: moboqe

F'/F=AB/BC

AB=10*BC

F'/F=10*BC/BC

F'/F=10

F'=10*F

F'=8,1*10=81 Н

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