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传送带问题在现代生产生活中的应用非常广泛,如商场中的自动扶梯、港口中的货物运输机等.这类问题中物体所受的摩擦力的大小和方向、运动性质都具有变化性,涉及力、相对运动、能量转化等各方面的知识,能较好地考查同学们分析物理过程及应用物理规律解答物理问题的能力.近几年这类问题已由较为单一的考查,演变成以突出能力为主的综合性、灵活性与
Conveyor belt problems are widely used in modern life, such as escalators in shopping arcades, cargo conveyors in ports, etc. The magnitude and direction of the friction suffered by the objects in such problems are subject to change in their mobility , Relative movement, energy conversion and other aspects of knowledge, can better examine the students to analyze the physical process and the application of physical laws to answer physical problems ability.In recent years, such problems have been more sole examination, evolved into prominent ability Based on the comprehensive, flexible and