本题目来源于试卷: Typical Forces,类别为 美国物理杯赛(Physics Bowl)
[单选题]
15.13: An object is lv32*fg6s)5 fgtpljwj5)zu ubeing pushed at constant speed on an inclined pla 26ze .x9qfxyva5 v- w hdh9kg(ne. The free body diagram of the object is shown with the gravitat h e-gwxv 6azqfvkd95y9 x(h.2 ional force represented by W, the friction force by f, the applied external push parallel to the incline by F, and the normal force with the surface by n. Which one of the following choices represents correct relationships between
A. $ n > W, F < f $
B. $n < W, F = f $
C. $n < W, F < f $
D. $n = W, F > f$
E. $n = W, F = f$
参考答案: C
本题详细解析:
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