椭圆摆可在光滑的水平面上运动，质量尺寸已知，取x和φ为广义坐标，编程计算至少2个周期的运动，画出各种曲线图或动画，进行常数校核。-Ellipse can be placed on a smooth, level surface motion, mass size is known, take x and φ generalized coordinates programmed to calculate the movement of at least two cycles, draw all k