物体在竖直平面内做匀速圆周运动,机械能是否守恒?为什么不考虑空气阻力.如果守恒,那动能是不便的,而重力势能是改变的,如果不守恒,那拉力对物体又不做工,只有重力做工.
来源:学生作业帮助网 编辑:作业帮 时间:2024/07/06 15:51:28
![物体在竖直平面内做匀速圆周运动,机械能是否守恒?为什么不考虑空气阻力.如果守恒,那动能是不便的,而重力势能是改变的,如果不守恒,那拉力对物体又不做工,只有重力做工.](/uploads/image/z/4767012-36-2.jpg?t=%E7%89%A9%E4%BD%93%E5%9C%A8%E7%AB%96%E7%9B%B4%E5%B9%B3%E9%9D%A2%E5%86%85%E5%81%9A%E5%8C%80%E9%80%9F%E5%9C%86%E5%91%A8%E8%BF%90%E5%8A%A8%2C%E6%9C%BA%E6%A2%B0%E8%83%BD%E6%98%AF%E5%90%A6%E5%AE%88%E6%81%92%3F%E4%B8%BA%E4%BB%80%E4%B9%88%E4%B8%8D%E8%80%83%E8%99%91%E7%A9%BA%E6%B0%94%E9%98%BB%E5%8A%9B.%E5%A6%82%E6%9E%9C%E5%AE%88%E6%81%92%2C%E9%82%A3%E5%8A%A8%E8%83%BD%E6%98%AF%E4%B8%8D%E4%BE%BF%E7%9A%84%2C%E8%80%8C%E9%87%8D%E5%8A%9B%E5%8A%BF%E8%83%BD%E6%98%AF%E6%94%B9%E5%8F%98%E7%9A%84%2C%E5%A6%82%E6%9E%9C%E4%B8%8D%E5%AE%88%E6%81%92%2C%E9%82%A3%E6%8B%89%E5%8A%9B%E5%AF%B9%E7%89%A9%E4%BD%93%E5%8F%88%E4%B8%8D%E5%81%9A%E5%B7%A5%2C%E5%8F%AA%E6%9C%89%E9%87%8D%E5%8A%9B%E5%81%9A%E5%B7%A5.)
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