本题目来源于试卷: Physics Unit4: Force Dynamics & Newton's Laws，类别为 国际高中通用物理
[单选题]
A student pulls a box of books on a smooth horiz. i-xm )ipnc,qpo (ng-onnh8;e5vyf+ qnwb-b9ve ,aah* tal floor with a force of 100 N in a direction of 37.0e above the horizontal. If the mass of the b vv8wne+q aa,fbn*y;5-h b h9eox 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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