1镊子2羊角锤3铡刀4钢丝钳5天平6大扫帚7筷子8剪铁皮的剪刀9道钉撬10撬棒.省力杠杆?等臂杠杆?费力杠杆?

问题描述:

1镊子2羊角锤3铡刀4钢丝钳5天平6大扫帚7筷子8剪铁皮的剪刀9道钉撬10撬棒.省力杠杆?等臂杠杆?费力杠杆?

省力杠杆2,3,4,8,9,10等臂杠杆5剩下的费力