Circular Motion (id: 661e84940)

本题目来源于试卷: Circular Motion，类别为 美国物理杯赛(Physics Bowl)

[单选题]
17.10: A 2000 kg car moye)s7 8m2f(ibwot;wkves over a hil5n1j nol9+j ril at a constant speed of 12.0 m/s. At the very top of the hill, the shape of the road can be approximated as a circle with radius 25 m, as indicated in the figure. Which one of the following choices best represents the magnitude of the upward force exerted by the rojr i+51onjnl9ad on the car?

A. 0 N
B. 8.5 kN
C. 11.5 kN
D. 20.0 kN
E. 31.5 kN


参考答案:  B


本题详细解析: 暂无

微信扫一扫，分享更方便