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题目:一传送带装置示意如图1,其中传送带经过AB区域时是水平的,经过BC区域时变为圆弧形(圆弧由光滑模板形成,未画出),经过CD区域时是倾斜的,AB和CD都与BC相切.现将大量的质量均为m的小货箱一个一个在A处放到传送带上,放置时初速为零,经传送带运送到D处,D和A的高度差为h.稳定工作时传送带速度不变,CD段上各箱等距排列,相邻两箱的距离为L.每个箱
Title: A conveyor belt device is schematically shown in Fig. 1, in which the conveyor belt is horizontal when passing through the AB area, becomes arc-shaped when the BC area passes (the arc is formed by a smooth template, not shown), and is inclined when passing through the CD area. Both AB and CD are tangent to BC. Now a large number of small containers with mass m are placed one by one on the conveyor belt at place A. When placed, the initial velocity is zero, and the conveyor belt is transported to D. The height difference between D and A is In order to stabilize the work, the speed of the conveyor belt does not change, and the boxes on the CD section are arranged equidistantly, and the distance between two adjacent boxes is L. Each box