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本文通过对宁夏2009年理综36题第二小题中机械能守恒的证明,探讨高中教材中关于机械能守恒定律表述的合理性,并有针对性的给出了对于机械能守恒定律表述的建议和教师在讲授机械能守恒定律内容时的建议.
This paper proves that the conservation of mechanical energy in high school teaching materials is justified by the proof of the conservation of mechanical energy in the second subheading of 36 questions in 2009 in Ningxia, and gives the suggestions and teachers’ suggestions on the conservation law of mechanical energy Suggest when teaching the law of conservation of mechanical energy.