本题目来源于试卷: Physics Unit4: Force Dynamics & Newton's Laws，类别为 通用国际物理
[单选题]
A student pulls a box of books on a smooth horizontal floor with ahk mu4 i8kxn:4 ;31 sd;e gr3ccqv3mzd:/bo ln uyg5 6qforce of 100 N in a direction of 37.0e above the hl v nqm633de: rcb /g3y;cd;zoug1 qs5orizontal. If the mass of the box and the books is 40.0 kg, what is the normal force on the box?
A. $292 \; N$
B. $312 \; N$
C. $332 \; N$
D. $392 \; N$
参考答案: C
本题详细解析:
暂无
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