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Yahoo!奇摩知識+ - 分類問答 - 視聽娛樂 - 發問中
Yahoo!奇摩知識+ - 分類問答 - 視聽娛樂 - 發問中
鐵軌是如何和輪子有摩擦力的?
Jun 17th 2013, 08:05

知識問題|

發問者: 匿名
發問時間: 2013-06-17 16:05:10 ( 還有 4 天發問到期 )
解答贈點: 20 ( 共有 0 人贊助 )
回答: 0 0

鐵軌的表面很光滑
估計車輪的表面也很光滑
這兩種光滑的物體一碰到
要如何產生足夠的摩擦力讓車輛前進?
這問題困擾我很久了....
不過曾玩火車模擬遊戲時有提示說
將沙子倒入車輪增加摩擦力
是這個造成磨擦力的產生嗎?

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