相互接触的物体是否会发生相对滑动,是否会发生分离等等,这些问题往往具体地体现为两物体刚好要发生相对滑动时,接触面上必须出现最大静摩擦力,当两物体要发生分离时,相互的压力必定为零。这就是问 The mutual contact of objects will occur relative sliding, whether separation will occur, these problems are often specifically reflected in the relative sliding of two objects to occur, the contact surface must be the maximum static friction, when the two objects to be separated, Mutual pressure must be zero. This is the question