作者augusta1219 (augusta)
看板Physics
标题[问题] 简谐运动问题+证明
时间Sun Nov 16 11:53:35 2008
A sphere of mass=m, is attached to an elastic cord of constant=k,
which is underformed when the sphere is located at the origin O.
Knowing that the sphere may slide without friction on the
horizontal surface and the position show its velocity=v
中文翻译大概:一个物体质量m被一个弹性绳弹力常数k绑住,
物体聚有初速v绕着圆点开始旋转时会改变绳长,
然後物体绕的平面无摩擦。
想问说:物体绕着圆点旋转时在平面会是一个"椭圆轨迹"的运动
那要如何证明说这轨迹是椭圆的呢?
谢谢帮忙解答!
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1F:推 qna:先证明各投影分量为简谐运动 在证明相位差90 11/16 18:29
2F:→ augusta1219:圆形相位差也是90度呀 11/16 19:10
3F:推 qna:圆只是X-Y振幅相同的特例阿 11/16 21:53
4F:→ augusta1219:那怎麽证明他是椭圆的呢?!!! 11/17 23:09