關於靜力學的問題 - 考試
By Belly
at 2014-02-01T13:50
at 2014-02-01T13:50
Table of Contents
版上高手新年快樂，小弟最近在看靜力學，有個題目如下所示
http://i1337.photobucket.com/albums/o671/inourdays0514/1_zpsac3cd3e1.png
小弟若取MC=0，Ay*(6+6+4+4) = [(6+6)*1.5/2]*(12*1/3+4+4) + 3*4
得Ay=6，與詳解的Ay有所差異，故想問版上高手解惑，是我哪裡觀念錯了?
謝謝大家，小弟祝大家新年快樂，事事順心。
--
http://i1337.photobucket.com/albums/o671/inourdays0514/1_zpsac3cd3e1.png
小弟若取MC=0，Ay*(6+6+4+4) = [(6+6)*1.5/2]*(12*1/3+4+4) + 3*4
得Ay=6，與詳解的Ay有所差異，故想問版上高手解惑，是我哪裡觀念錯了?
謝謝大家，小弟祝大家新年快樂，事事順心。
--
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