本题目来源于试卷: Physics Unit11: Vibrations and Waves，类别为 国际高中通用物理
[单选题]
A 0.30-kg mass is suspended on a spring. In equilibrium the a( apw5r3qj4dyifzyfzh s cn9-9:/d+mass stretches the h4(2od itjd)i0)u gy;go9tkvspring 2.0 cm downward. The vkid)4(0 y tod)2g ;u i9jhogtmass is then pulled an additional distance of 1.0 cm down and released from rest. Write down its equation of motion.
A. y = $0.01 \; \cos (22.1t)$
B. y = $0.01 \; \sin (22.1t)$
C. y = $0.03 \; \cos (22.1t)$
D. y = $0.03 \; \sin (22.1t)$
参考答案: A
本题详细解析:
暂无
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