問題詳情
11. 如圖所示，z軸通過O點且垂直於xy平面，求半徑為R的圓面積對z軸的極慣性矩J為多少？ 
(A) 3/2πR^
(B) 5/4πR^
(C)πR^
(D)3/4 πR^4。
(A) 3/2πR^
(B) 5/4πR^
(C)πR^
(D)3/4 πR^4。
參考答案
答案：A
難度：困難0.208333
統計：A(5),B(5),C(2),D(6),E(0)
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