問題詳情
2. 如圖(一)所示，有一物體其重量為 W，由一懸臂梁 AB 及一繩索 BC 所支承，若梁及繩索自重皆忽略不計，則下列梁 AB 之自由體圖何者正確？
(A)
(B) 
(C)
(D) 
參考答案
無參考答案
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