Question

一道物理题,关于杠杆的,当l1＞l2时,F1＜F2,使这种杠杆__________,当l1＜l2时,F1＞F2,使这种杠

Answer 1

当l1＞l2时,F1＜F2,使这种杠杆__省力_费距离_______,

当l1＜l2时,F1＞F2,使这种杠杆___费力__ 省距离___,

当l1=l2时,F1=F2,使这种杠杆_____不省力也不省距离_________.