农用水车的变质量力学分析

Mass-changing Mechanical Analysis of Agricultural Waterwheel

应用变质量力学原理对农用水车在提水过程中所经历的三个不同阶段，即在运动过程中水车的受力和运动量都在发生变化的情况下，对其动力学问题进行了较为深入的分析，导出了水车由起动至稳定运转三个阶级的运动微分方程，并得到了它们的解答，进而求得水车在趋于定常运动时的转动角速度．

Based on the principle of mass-changing mechanics,this paper analyzes the process of water wheel raising water,educes its movement differential equations in its three stages from starting to stable running,obtains solutions of the equations,and calculates on the angular velocity of the waterwheel in constant motion. The research results are helpful for the design of agricultural waterwheel or rotational water-raising device.