各种杠杆各种杠杆省力杠杆：羊角锤、钳子省力杠杆：羊角锤、钳子费力杠杆：缝纫机踏板费力杠杆：缝纫机踏板省力杠杆：刹车踏板省力杠杆：刹车踏板下列都是省力杠杆下列都是省力杠杆下列都是费力杠杆下列都是费力杠杆费力杠杆：理发剪刀费力杠杆：理发剪刀费力杠杆：扫帚费力杠杆：扫帚省力杠杆：自行车手闸省力杠杆：自行车手闸等臂杠杆：天平等臂杠杆：天平费力杠杆：起重机费力杠杆：起重机定滑轮：等臂杠杆定滑轮：等臂杠杆动滑轮：动力臂是阻力臂二倍的杠杆动滑轮：动力臂是阻力臂二倍的杠杆FO前臂举物体和手腕上举都是费力杠杆前臂举物体和手腕上举都是费力杠杆羊角锤省力杠杆，钓鱼竿是费力杠杆羊角锤省力杠杆，钓鱼竿是费力杠杆省力杠杆：省力杠杆：a,c,d费力杠杆费力杠杆:b.e俯卧撑：省力杠杆俯卧撑：省力杠杆船桨是费力杠杆船桨是费力杠杆抽水机手柄省力杠杆抽水机手柄省力杠杆铡刀省力杠杆铡刀省力杠杆指甲刀：指甲刀：ABC是省力杠杆，是省力杠杆，EBD和和EHG费力杠杆费力杠杆
