作者查詢 / w0320
作者 w0320 在 PTT [ Grad-ProbAsk ] 看板的留言(推文), 共86則
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4F推:樓上說的就是力學能量觀點囉04/21 16:16
1F推:前端N=0 恰離開 但尚未翹起02/29 22:47
2F→:了解 謝謝02/26 22:55
2F→:恩對02/25 18:47
4F→:車子也會跟著動 讓我有點棘手... 而且帶入解聯力答案很亂02/25 18:49
5F→:恩 我寫到這 之後的運動就無法再計算下去了 只好寫流程02/25 18:49
9F→:答案應該無法很乾淨02/25 18:51
17F→:恩 我有寫小球相對速度行走02/25 18:54
20F→:謝謝你 方向對了 只是過程很不嚴謹 不支給分鬆不鬆02/25 19:45
23F→:謝謝! 另外想問我最後依個想法這樣是否有誤呢?02/25 21:44
25F→:樓上也船舶嗎?02/25 23:05
2F→:意思是...? 題目說車子等速度0.602/21 00:00
5F→:哦 懂意思 不過題目 const. speed 那應該就等速 加速度0囉02/21 00:03
6F→:所以我的第一個想法才是囉 只看敢子再轉就好了02/21 00:03
7F→:其他車子的條件用不太到02/21 00:03
9F→:好的 謝謝你!02/21 00:04
15F→:航太那題是用線動量守恆 問的東西不同02/21 00:44
13F推:我不曉得PDE邊界...02/19 18:29
14F→:只好亂掰一個邊界裝死算下去02/19 18:29
16F推:不知這裡有無甲組的 動力學竟然異常...02/19 18:42
18F推:不如往常那樣難02/19 20:07
19F推:七八成都別校考古題02/19 20:09
22F推:拆成自然指數02/20 09:37
23F→:欸不對有平方 先弄倍角半角 之後cosh再換自然指數02/20 09:38
2F→:他偏心 所以會轉02/16 00:30
3F→:速度大一點的話 最後板子跟繩子會成一個三角型02/16 00:30
4F→:想像一下 頂點在右邊02/16 00:30
5F→:打在質心上才不會轉動02/16 00:31
6F→:像這樣 http://i.imgur.com/1Ites.jpg02/16 00:34
16F→:那麼我直心速度這樣假設是錯的唷?02/16 09:06
17F→:順心是否就是在繩子連線上 因為也沒有解答 所以只好自己摸02/16 09:06
18F→:索了02/16 09:06
19F→:這題是成大船柏八十幾年的考題 老題目頗有難度02/16 09:45
9F推:北科車輛96第五題02/14 21:59
4F推:脈衝函數02/10 18:40
7F推:借題問一個小問題 他的初始條件 t<002/10 23:16
8F→:這樣Y(0)還會等於1嗎02/10 23:17
9F→:會不會是題目少打了個等號?02/10 23:17
17F推:s大 可以請教一下他的初始值嗎02/11 10:12
18F→:他T沒等小"等於"0 那還可以Y(0)=1嗎02/11 10:12
6F推:第一 回歸02/09 19:43
7F→:第二 98成大船舶 叉積再點積02/09 19:44