Предмет: Физика, автор: toktosunovaajzana5

дам 35 баллов
помогите пожалуйста решить

Приложения:

Ответы

Автор ответа: daniilzhulanov
1

Привееет!)

1) Дано:

F1=5Н

l1=0,22м

l2=0,11м

F2-?

Решение: M1=M2, где M=F*l

F1*l1=F2*l2; F2=F1*l1/l2

F2=5*0.22/0.11=10(Н)

Ответ: 10Н

2) Дано:

F1=4000Н

F2=200Н

l1=0,6м

l2-?

Решение: M1=M2, где M=F*l

F1*l1=F2*l2; l2=F1*l1/F2

l2=4000*0.6/200=12(м)

Ответ: 12м

3) Дано:

l1=0.45м

m=200кг

l2=3м

F2-?

Решение: M1=M2, где M=F*l; F=mg

F1*l1=F2*l2

m*g*l1=F2*l2

F2=m*g*l1/l2

F2=200*10*0.45/3=300(Н)

Ответ: 300Н

Удачи;)


toktosunovaajzana5: ^^
daniilzhulanov: Если будут вопросы - пиши )
toktosunovaajzana5: Да возникает вопрос
toktosunovaajzana5: что написано в первом решении
toktosunovaajzana5: я не очень разобрала
toktosunovaajzana5: после F=5N
toktosunovaajzana5: а дальше я не поняла буквы
toktosunovaajzana5: а нет извините, это моя невнимательность
daniilzhulanov: не успел ответить - ты сам(а) ответил(а) на вопрос ахахах
toktosunovaajzana5: Бывает , что поделаешь хех
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