摩擦力作用于运动着的物体,并使其停止。
如果没有起粘着作用的摩擦力,几乎只有很小的可能性让你只靠腰和一条腿倒挂在钢管上。
Which, without that sticky friction, might be a (small) possibility when you're hanging to a strippers pole upside down attached only by your waist and one flailing leg.
为什么摩擦力不起作用?
应用推荐