Attach a rod assembled from cylindrical neodymium magnets horizontally to a vertical ferromagnetic rod. Limit the motion of the magnets to the vertical direction. When the ferromagnetic rod is spun around its axis of symmetry, the magnetic rod begins to climb up. Explain this phenomenon and investigate how the rate of climbing depends on relevant parameters.
https://www.youtube.com/watch?v=k0oNkO2YI-w
注意:參考影像磁鐵運動的部分即可,影片說明的部分不宜全部採信,可能有相當的錯誤資訊
研究基礎: 物理:力、力矩、轉動、角速度、摩擦力 工程:摩擦學(tribology)、stick-slip motion
會往上走的原因?
影響速率的因素
要較好的分析此實驗,需有定量的數據(包含以聲音、影像觀察磁鐵的運動)
老師對此題目的研究重點提示
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