| 验证机械能守恒定律实验的改进 |
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| 引用本文： | 樊利芳.验证机械能守恒定律实验的改进[J].物理实验,2011(9). |
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| 作者姓名： | 樊利芳 |
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| 作者单位： | 番禺实验中学; |
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| 摘 要： | 在验证机械能守恒定律实验中,针对小球经过光电门时瞬时速度的测量不准确的问题,提出了两点改进的方法:考虑到光束的有效宽度,建议将瞬时速度公式进行修正;另外调节光束垂直照在小球的悬线上.这两种改进方法能够使验证机械能守恒定律实验更加准确.
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| 关 键 词： | 机械能 能量守恒 光电门 |
Improving the experiment of verifying the conservation of mechanical energy |
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| FAN Li-fang.Improving the experiment of verifying the conservation of mechanical energy[J].Physics Experimentation,2011(9). |
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| Authors: | FAN Li-fang |
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| Institution: | FAN Li-fang(Panyu Experiment Middle School,Guangdong 511400,China) |
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| Abstract: | In the experiment of verifying the conservation of mechanical energy,the instantaneous velocity of the ball passing through the photoelectric gate can not be accurately measured.In order to solve this problem,two methods were presented.Firstly,the calculation formula should be modified on account of the width of the light beam.Secondly,the light beam should shine vertically on the line that hanging the ball.The improved method could highly increase the accuracy of the experiment. |
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| Keywords: | mechanical energy energy conservation law photoelectric gate |
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