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 o:2tocqh/ lz* p(1r yjmn a spring. In equilibrium the mass: d2wht3y (ep l4fupc3 stretches the spring 2.0 cm downward. The mass is then pulled an additional distance of 1.0 cm down and released from rest. Write down its equation of motiopf3teh3 2(p4wy l dcu:n.
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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