本题目来源于试卷: Basic Concepts，类别为 美国物理杯赛(Physics Bowl)
[单选题]
09.22: A point object is connected to the end of a long strinmf6f0xn3 do8n g of negligsqvency mi1 ycw; 4/14ptf-l+r4lt3nible mass and the system swings as a simple pendulum with pe n3/-4 wcyienmll+syt14 vptrq4 f1; criod T. What is the period of the pendulum if the string is made to have one-quarter of its original length?
A. $4T$
B. $2T$
C. $T$
D. $T/2$
E. $T/4$
参考答案: D
本题详细解析:
暂无
| 
