图甲
图乙
如图所示,一轻质杠杆AC可绕支点O自由转动,在B点挂一重为G的物体.为使杠杆在水平位置保持平衡,画出施加在杠杆上最小力F的示意图.
- ____ you ____ (write) to the newspaper to talk about the terrible traffic in our city?
- Not yet.