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1. 如圖所示,物體A放置於斜面上,重量為80N,其與斜面之摩擦係數為0.25,若欲使物體A不會往下滑動,則力量F至少應為多少N? (A)6 (B)12 (C)22 (D)32。
問題詳情
1. 如圖所示,物體A放置於斜面上,重量為80N,其與斜面之摩擦係數為0.25,若欲使物體A不會往下滑動,則力量F至少應為多少N?
(A)6
(B)12
(C)22
(D)32。
參考答案
答案:D
難度:困難0.380952
統計:A(4),B(5),C(3),D(8),E(0)
用户評論
【用戶】
blacktwang
【年級】小一上
【評論內容】請問為什麼要乘4/5?還有...32怎麼來的 有點不懂 剛剛在學習得初心者抱歉
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