用传送带传送物体,在实践中有很广泛的应用,也常被编入中学物理的有关问题中。现用动力学方法分析一下,取不同物理模型时,物体与带保持相对静止随带运动所必须遵循的条件。为不失一般起见,设传送带倾角为θ,令物体的质量为 m,物体与带之间的静摩擦系数为μ_0。一、把物体作为质点模型处理物体随带运动的受力图如图1所示,各力 The use of conveyor belts to convey objects has a wide range of applications in practice and is often incorporated into the problems associated with secondary school physics. The dynamics method is used to analyze the conditions that must be followed when objects and tapes are kept relatively stationary with different physical models. For the sake of generality, set the tilt angle of the conveyor belt to θ, so that the mass of the object is m, and the static friction coefficient between the object and the belt is μ_0. First, the object as a particle model to deal with the movement of the object with the force diagram shown in Figure 1, the various forces