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第1届全国中学生物理竞赛试卷中的一道相遇类试题,至今一直被广为流传,出现在各类竞赛辅导与高考复习资料中,其解法也被传承下来,笔者认为其解法过于片面,值得商榷,进而对该题深入思考并用两种方法详尽探析如下.试题:一根长为L的均匀细杆可以绕通过其一端的水平轴O在竖直平面内
In the 1st National Middle School Student Physics Contest, a meeting class test has been widely circulated. It has appeared in various competition counseling and college entrance examination review materials. Its solution has also been passed down. The author believes that its solution is too one-sided and worth discussing. , And then in-depth thinking on this topic and two methods are discussed in detail as follows. Question: A uniform thin rod of length L can pass around the horizontal axis O at one end of it in the vertical plane