一木柱橫臥地面,如用力F1,即可將其一端舉起,另一端著地,如用同樣方法舉起另一端時,所需之力為F2,則此木柱之重量為多少?
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一木柱橫臥地面,如用力F1,即可將其一端舉起,另一端著地,如用同樣方法舉起另一端時,所需之力為F2,則此木柱之重量為多少?
Posted in 力矩與剛體靜力平衡.
rev="post-3406" 1 comment
By admin – 2010 年 09 月 15 日
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