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> 如图所示，固定在轻质弹簧两端，质量分别是 =0.5kg, =1.49kg的两个物体，置于光滑水平面上, 靠在光滑竖直墙上．现有一个m=0.01kg的子弹水平射入中(没有穿出)，使弹簧压缩而具有12J的弹性势能，再后都将向右运动，试求： (1)子弹入射前的速度v； (2)竖直墙对的冲量． (3)运动过程中弹簧可具有的最大弹性势能．

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发布时间：2024-09-09

如图所示，固定在轻质弹簧两端，质量分别是 =0.5kg, =1.49kg的两个物体，置于光滑水平面上, 靠在光滑竖直墙上．现有一个m=0.01kg的子弹水平射入中(没有穿出)，使弹簧压缩而具有12J的弹性势能，再后都将向右运动，试求：

(1)子弹入射前的速度v；
(2)竖直墙对的冲量．
(3)运动过程中弹簧可具有的最大弹性势能．

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