本题目来源于试卷: 2011 美国F=ma物理竞赛 F=ma physics competition，类别为 美国物理杯赛(Physics Bowl)
[单选题]
Which of the following changes will result in an increasrn4 )w ( m)w cd9cv jwc7c9sw*cd0k2gpe in the pe9,sbp9k:f prxriod of a simple penduf9,r sbk9x:pplum?
A. Decrease the length of the pendulum
B. Increase the mass of the pendulum
C. Increase the amplitude of the pendulum swing
D. Operate the pendulum in an elevator that is accelerating upward
E. Operate the pendulum in an elevator that is moving downward at constant speed.
参考答案: A
本题详细解析:
暂无
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