Zend
發表於 17-1-2009 16:58:28
you told me the result , but not the reason-.-
adamsteve
發表於 18-1-2009 13:30:50
係咪我又睇錯左題目呀@@
多數都係架啦
人地咁比面 叫到YU爺入黎答 咁你就答啦 我唔識架 行過"蠟"到類似野咪答返類似GE 野LO
哈哈
剷POST剷死我啦.... 死MAINLAND洗我版賣廣告
L.K.
發表於 18-1-2009 14:56:29
本帖最後由 L.K. 於 18-1-2009 15:05 編輯
2條 non-parallel forces (A同B)
一定會有一個相交點(O)...
如果TAKE 呢一點做MOMENT GE話..
佢會冇TORQUE
之後再畫多條non-parallel force
呢條線一定會PASSING THOUGH O
係唔係咁....
=============
點解我冇TUZKI...
ysnCi62W6wQ
[S]【YU】
發表於 18-1-2009 16:32:44
你試下畫多條not passing through O 既 line, 睇下有無moment?
L.K.
發表於 18-1-2009 17:47:20
有...
所以個STATEMENT係TURE
http://www.nakuz.com/data/attachment/forum/day_090110/0901102352bd62d509f0eab0a8.gif
http://www.nakuz.com/data/attachment/forum/day_090110/0901102352bd62d509f0eab0a8.gif