如图所示一轻弹簧竖直固定在水平地面上弹簧正上方有一个小球自由下落.从小球接触弹簧上端o点到将弹簧压缩到最短的过程中小球的加速度a随时间t Template




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tomski如图所示一轻弹簧竖直固定在水平地面上弹簧正上方有一个小球自由下落.从小球接触弹簧上端o点到将弹簧压缩到最短的过程中小球的加速度a随时间t coloring