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Автор - saideametova9

Определите силу приложенную к большому плечу уровновешенного рычага если оно больше меньшего в 3 раза к меньшем приложение сила 90 Н

Ответ

Автор - 1235tust

L1=3*L2

F2=90 H

F1=?

по правилу моментов

F1*L1=F2*L2

F1=F2*L2/L1=F2*L2/3*L2=F2/3=90/3=30 H

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