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The difference between a wrench-saving lever and a labor-saving lever.Air impact wrench
source:Industry News release time:2022-07-07 Article author:yu Popular:Air band saw
The labor-saving lever, as the name suggests, has a longer power arm and less power, so it saves effort. The lever balance condition is that the power multiplied by the power arm is equal to the resistance multiplied by the resistance arm, then under the condition of lever balance, when the power (F1) is greater than the resistance (F2), and the power arm (L1) is less than the resistance arm (L2), the lever is a labor-intensive lever.
The difference between labor-saving levers and labor-saving levers
The difference between labor-saving leverage and labor-saving leverage
different formulas
1. The formula F1L1=F2L2 can be obtained, the longer the force arm, the smaller the force.
2. Formula: When L1×F1=L2×F2, L1F2.
Different examples in life
1. Effort-saving levers: crowbars, wrenches, pliers, nail pullers, bottle openers, iron scissors, wire cutters, nail scissors, car steering wheels, etc.
2. Laborious levers: tailor scissors, chopsticks, arms, fans, castanets, tweezers, spoons, iron gates, cranes, fishing rods, sewing machine pedals, paddles, hairdresser's scissors, clothes drying.
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