一些力學問題 - 土木
By Freda
at 2013-12-14T16:59
at 2013-12-14T16:59
Table of Contents
1.http://ppt.cc/HC5R
如果一階微分不為0那用二階還是可以判斷穩定或不穩定嗎?
我用30度算入二階算是大於0穩定(黑筆部分)
2.http://ppt.cc/W8JN
紅圈部分為什麼可以這樣近似呢?是怎麼推出的?
3.http://ppt.cc/pwdh
a 是指A collar在不受向左的加速度的情況下所觀測到的C collar的加速度
c/a
右邊的解是我認為應該這樣算的,因為我算出來C collar的加速度小於6.94
因為c小題C collar有受到向左的加速度,而C collar的加速度又是向右下
所以C collar的加速度小於6.94感覺合理,不知是不是詳解寫錯?
謝謝^^
--
如果一階微分不為0那用二階還是可以判斷穩定或不穩定嗎?
我用30度算入二階算是大於0穩定(黑筆部分)
2.http://ppt.cc/W8JN
紅圈部分為什麼可以這樣近似呢?是怎麼推出的?
3.http://ppt.cc/pwdh
a 是指A collar在不受向左的加速度的情況下所觀測到的C collar的加速度
c/a
右邊的解是我認為應該這樣算的,因為我算出來C collar的加速度小於6.94
因為c小題C collar有受到向左的加速度,而C collar的加速度又是向右下
所以C collar的加速度小於6.94感覺合理,不知是不是詳解寫錯?
謝謝^^
--
Tags:
土木
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