首页/ 题库 / [单选题]一竖直悬挂的弹簧振子原来处于静止状态,用的答案

一竖直悬挂的弹簧振子原来处于静止状态,用力将振子下位0.02m后释放,使之做谐振动,并测得振动周期为0.2s,设向下为x轴的正方向,则其振动表达式(SI)为()

单选题
2021-09-01 23:34
A、1373958952000.jpg
B、1373958959078.jpg
C、1373958967140.jpg
D、x=0.02cos10 πt
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正确答案
D

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