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Длина рычага 1 м. Где должен находиться точка опоры чтобы груз весом 5н, подвешенный на одном конце рычага уравновешивался грузом весом 20 на подвешенный ко второму концу рычага
Ответы 1
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Условие равновесия на рычагеM1=M2х- расстояние от груза до точки опорыF(L-x)=mgx20(L-х)=5x20-20x=5x20=25x5x=4x=4/5м=0,8мОтвет 0,8м
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Автор:
scoobierjcu - 4 года назад
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Ребятушки, помогите пж мне!
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The cat and the mouse
Play’d in the malt-house:
The cat bit the mouse’s tail off. “Pray, puss, give me my tail.” “No," says the cat, “I’ll not give you your tail, till you go to the cow, and fetch me some milk.”
First she leapt and then she ran,
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First she leapt, and then she ran,
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“Pray, Butcher, give me meat, that I may give farmer meat, that farmer may give me hay, that I may give cow hay, that cow may give me milk, that I may give cat milk, that cat may give me my own tail again." "No,” says the butcher, “I’ll give you no meat, till you go to the baker and fetch me some bread.”
First she leapt and then she ran,
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But if you eat my meal, I’ll cut off your head.”
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