The law of variable mass motion of a soft rope is studied.
研究了一种变质量柔绳上升和下降的运动规律。
Some of the equations can be used to investigate the dynamics of relative motion of non-holonomic system with variable mass.
其中某些方程可用于研究变质量非完整系的相对运动动力学。
The motion of variable mass system under variable force is studied using air track.
在气垫导轨上研究了变质量物体在变力作用下的运动规律。
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