【简答题】![](https://cos-cdn.shuashuati.com/shuashuati-web/2024-0521-0905-00/logo-new-ad743.png)
图甲所示为一根竖直悬挂的不可伸长的细绳,下端拴一小物块A,上端固定在C点且与一能测量绳的拉力传感器相连.已知有一质量为m0的子弹B沿水平方向以速度v0射入A内(未穿透),接着两者一起绕C点在竖直平面内做圆周运动,在各种阻力都忽略的条件下测力传感器测得绳的拉力F随时间t的变化关系如图乙所示.已知子弹射入的时间极短,且图乙中t=0为A、B开始以相同速度运动的时刻,根据力学规律和题中(包括图)提供的信息,试求A的质量?
![](https://cdn.shuashuati.com/imgs/2d2e06bfb799b0c21caa25e8cc853b76.jpg)
![](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAACAAAAAgCAYAAABzenr0AAAA5ElEQVRYR2NkGGDAOMD2M+B0wKpVq9huv/jbxPD/fxwDA4MkhQ59zsDIuEhVgrkuLCzsF7JZOB3QOml5B8P//+UUWoyqnZGxszovsoI4B0xc9gyfzxmZmb2rcsK3IRvWMWm599///7fgcfTz6vwoKWId8B+f75kZGX0q8iK3kugAhur8KJRQxx0FE5fhdQC5UTPqgNEQGA2B0RAYDYHREBgNgaETAuTW96TqG7yt4tbRFhGRIQBqHTP9+8dIoDUMTxqk5AK8zXKYiaDWMYhNpANIaJYPdMdkwLtmpOZnctUPeDkAAP6tmiH1ggTLAAAAAElFTkSuQmCC)
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参考答案:
![](https://cos-cdn.shuashuati.com/shuashuati-web/2024-0521-0905-00/logo-new-ad743.png)
参考解析:
![](https://cos-cdn.shuashuati.com/shuashuati-web/2024-0521-0905-00/logo-new-ad743.png)