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多物体周期性运动的问题是高中物理中最为复杂的内容之一,由于同时运动的物体多、过程多,许多学生在分析时往往顾此失彼,不知所措.而从功和能的角度去分析就更加雾里看花,难辨是非了.例题.一传送带装置如图1所示,传送带在AB区域是倾斜的,倾角θ=30°.工作时传送带向上运行的速度保持v=2 m/s不变.现将质量均为m=2kg的小货箱(可视为质点)一个一个在A处放到传送带上,放置小货箱的
The problem of multi-object cyclical movement is one of the most complex subjects in high school physics. Because of the many objects and processes that are moving at the same time, many students often fail to understand what they are doing. More foggy flowers, difficult to distinguish between right and wrong Example of a conveyor belt conveyor belt shown in Figure 1, the conveyor belt is inclined in the AB area, the angle θ = 30 ° Working conveyor belt speed up operation to maintain v = 2 m / s The same is true of small boxes of quality m = 2 kg (which can be considered as particles) placed one by one on a conveyor at A and placed in small containers