本题目来源于试卷: Circular Motion，类别为 美国物理杯赛(Physics Bowl)
[单选题]
08.35: Astronauts on the Moon perform an experim :vayjxu8-e d m7h07 r7yk v+ xc.yjv.eent with a simple pen / uf,8 elk-q7dcjeg x8dulum that is released from the horizontal position at rest. At the moment shown in the diagram with x8lcf g8- kqeu/edj, 7 $0^{\circ} < \theta < 90^{\circ}$ , the total acceleration of the mass may be directed in which of the following ways?
A. straight to the right
B. straight to the left
C. straight upward
D. straight downward
E. straight along the connecting string toward point P (the pivot)
参考答案: A
本题详细解析:
暂无
| 
