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course:interesting_problems:2025:topic4:start [2024/08/26 11:16] yao-hq [增加浅析] |
course:interesting_problems:2025:topic4:start [2024/08/28 20:33] (当前版本) yao-hq [小改] |
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| - | =====04 Climbing Magnets 攀爬磁铁===== | + | =====04 Climbing Magnets 磁铁攀爬===== |
| * 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. | * 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. | ||
| * 将一个由圆柱形钕铁硼磁铁组成的杆水平地附着在垂直的铁磁杆上。限制磁铁的运动方向为垂直方向。当铁磁杆绕其对称轴旋转时，磁杆开始向上攀爬。解释这一现象并研究攀爬速率如何取决于相关参数。 作者：IYPT青年物理学家 https://mp.weixin.qq.com/s/5W6-LwPaFwcg9YD_fvn4nQ 出处：wx | * 将一个由圆柱形钕铁硼磁铁组成的杆水平地附着在垂直的铁磁杆上。限制磁铁的运动方向为垂直方向。当铁磁杆绕其对称轴旋转时，磁杆开始向上攀爬。解释这一现象并研究攀爬速率如何取决于相关参数。 作者：IYPT青年物理学家 https://mp.weixin.qq.com/s/5W6-LwPaFwcg9YD_fvn4nQ 出处：wx | ||