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老虎钳是省力杠杆还是费力杠杆
更新时间: 2021-03-19 14:17:33  

1、省力杠杆。

2、支点在连接钳头和钳柄中间转动的圆心处(整个钳子围绕它转动),动力是手作用在钳柄上的力,阻力是钳口处夹住的物体(如铁丝、电线、钉子等)阻碍钳子转动的力。

3、因为动力臂大于阻力臂,所以是省力杠杆。

4、老虎钳,也叫钢丝钳,汉语拼音为lǎo hǔ qián,英文pincer pliers,是手工工具,钳口有刃,多用来起钉子或夹断钉子和铁丝。

关键词: 老虎钳 省力 杠杆 还是 费力

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