传送带问题在物理习题中经常会见到,这类问题由于涉及物体的相对运动,所以题目有一定的难度,因而不少学生经常解错,其错误原因主要是没有注意到题目中的陷阱。现作初步探讨如下:一、受力分析中的相对性陷阱例1.质量为0.1kg的物块随同水平传送带一起以3m/s的速度做匀速运动。如图1所示,已知最大静摩擦力为0.02N,求物块在运动中所需力的大小。 Conveyor problems are often encountered in physical exercises. Because of the relative movement of objects involved in such problems, the subject has a certain degree of difficulty. Therefore, many students often make mistakes. The main reason for the error is that they did not notice the traps in the subject. Now make a preliminary discussion as follows: First, the relative analysis of the force trap Example 1 mass of 0.1kg with the level of the conveyor belt together to do 3m / s speed uniform movement. As shown in Figure 1, it is known that the maximum static friction force is 0.02N, and the magnitude of the force required to move the block in motion is known.