作者查詢 / alan23273850
作者 alan23273850 在 PTT [ Physics ] 看板的留言(推文), 共53則
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1F推: 路徑長只適用於運動學吧,日常口語還是說距離04/21 13:59
9F推: phx 的比喻很棒!10/17 12:59
81F推: 倒著飛只是臨時的,正常飛才能長久吧09/26 11:07
15F推: 12 樓讓我笑了 哈哈哈08/06 10:44
33F噓: 紅明顯,下山比較傷膝蓋03/11 18:32
11F→: 樓上大大這樣回我好難以分析與反駁02/02 10:14
60F→: 樓上的情況應該僅限於燈光不是很亮的時候吧!02/04 11:34
61F→: 或者更精確的來說,是反光率不高的時候02/04 11:35
63F→: 好的好的感謝尼!02/04 22:36
2F→: 所以難以用數學語言描述嗎?01/01 12:26
11F推: 這題前四個都錯,刪去法輕輕鬆鬆12/10 01:52
1F→: 然後我其實不知道那個偏移量可以拿來幹嘛,從以前到05/24 01:03
2F→: 現在從來沒有用過05/24 01:03
13F→: 請問樓上所以我的解釋不足以構成天平回正的理由嗎?05/24 11:02
14F→: 哦哦哦 我好像懂上一篇的推文在說什麼了...05/24 11:03
15F→: 只要把天平的腳設計得厚一點,然後支點偏上方,那這05/24 11:03
16F→: 樣的話天平的厚度就會造成自身力矩而漸漸擺正對吧05/24 11:04
17F→: 所以我這篇的理由還是寫錯 冏05/24 11:04
18F→: 不過不知道有沒有人可以把它清楚地寫成式子,不然我05/24 11:06
19F→: 怎麼看起來覺得重的那邊會繼續往下沉,輕的會往上浮05/24 11:07
20F→: https://imgur.com/ic0yYYa05/24 11:08
30F→: 啊我好像懂了!原來是要把整支天平縮成一個質點來看05/24 12:00
31F→: 這樣好像就很清楚了,穴穴大大唷,喚起我以前的記憶05/24 12:01
32F→: 讚讚讚唷05/24 12:01
33F→: 整個 keyword 就是 "回復力矩" 四個字對ㄅ05/24 12:48
4F推: 你已經把動能寫成mgh了,mg常數,那剩下就跟h成正比01/10 10:34
5F→: 橫軸是h,所以就不要管v了01/10 10:35