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高中物理动态平衡经典母题,妥妥的试卷常客

  • 2026-09-24 04:15:24
高中物理动态平衡经典母题,妥妥的试卷常客
经典力的动态平衡题型，模型极其标准，无套路。
题干逻辑清晰，无复杂过程，属于受力分析问题中的动态平衡问题，理解力的矢量三角形的图解法就能快速解题。
题目中小球受三力作用，重力大小方向都不变，一力方向不变，这是这道题的关键，这样可以判断出要用矢量三角形的图解法来解题；
构建矢量三角形，要求箭头和箭尾依次相连，其中重力为其中一恒定边，根据矢量三角形另外两边长度的变化，即可得力的大小变化。
解析如下：
分享物理趣味点滴，不足之处，请各位大神多多指正。
本文来自网友投稿或网络内容，如有侵犯您的权益请联系我们删除，联系邮箱：wyl860211@qq.com 。

2026高考---地理试卷全国卷

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0.109916s