問題詳情
9. 如圖 ( 二 ) 所示，圓柱 1，重量 W1為300 N，半徑R1 = 2 m；圓柱2，重量 W2為600N，半徑R2 = 3m。若所有接觸面為光滑面(不考慮摩擦)，圓柱1與地面接觸點D的作用力為多少N？ 
(A) 1000
(B) 900
(C) 800
(D) 600
(A) 1000
(B) 900
(C) 800
(D) 600
參考答案
答案：B
難度：適中0.482353
統計：A(10),B(41),C(14),D(9),E(0)
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