本题目来源于试卷: Parameters and Typical Relationship，类别为 美国物理杯赛(Physics Bowl)
[单选题]
94.05: Amass m; attached t 2p+ k1nwh+grvcz3jbs a+ ;x.kg)z 7aio a horizontal ma :zu1k j37;+tqnm 6np vmhgx)p ssless spring with spring constant k; is set into s h3z7 1v;k)mn ntppgj +m u6:xqimple harmonic motion. Its maximum displacement from its equilibrium position is A. What is the mass’s speed as it passes through its equilibrium position?
A. 0
B. $A\frac{\sqrt{k}}{m}$
C. $A\sqrt{\frac{m}{k}}$
D. $\frac{1}{A}\sqrt{\frac{k}{m}}$
E. $\frac{1}{A}\sqrt{\frac{m}{k}}$
参考答案: B
本题详细解析:
暂无
| 
