一、摩擦力实验存在的问题通常“研究滑动摩擦力大小与哪些因素有关”的实验装置如图1所示,其操作为:用弹簧测力计匀速拉动木块,使它沿长木板滑动,从而测出木块与长木板之间的摩擦力;改变放在木块上的砝码,从而改变木块与长木板之间的压力;把棉布、毛巾等铺在长木板上,从而改变接触面的 First, the problem of friction experiment is usually “experimental device to study the size of the sliding friction and what factors ” is shown in Figure 1, its operation is: using a spring dynamometer to pull the block at a uniform speed, make it along the long board Slide to measure the friction between the block and the long plank; change the weight placed on the block to change the pressure between the block and the long plank; spread cotton cloth, towels, etc. on the long plank, so that Change the contact surface