本题目来源于试卷: Physics Unit5: Circular Motion & Gravitation，类别为 通用国际物理
[单选题]
A pilot executes a vertical i6j);se5o chur- h y-zdive then follows a semi-circular arc untilbpta 2kg8sgk, l (ib/p2 y0)jj it is going straight 8 pbg0,kl p/j2iy gb2a (tk)sjup. Just as the plane is at its lowest point, the force on him is
A. less than mg, and pointing up.
B. less than mg, and pointing down.
C. more than mg, and pointing up.
D. more than mg, and pointing down.
参考答案: C
本题详细解析:
暂无
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