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一、研究过程划分不清例1如图1所示,光滑水平面轨道上有A、B、C三个木块,其质量分别为m_A=m_C=2m,m_B=m,木块A、B用细绳连接,中间有一压缩的弹簧(弹簧与木块不拴接)。开始时木块A、B以共同速度v_0运动,木块C静止。某时刻细绳突然断开,木块A、B被弹开,然后木块B又与C发生碰撞并粘在一起,最终三木块的速度恰好相同,求木块B与C碰撞前B的速度。常见错误:本题是一个多过程问题,部分同学容
First, the research process is not clear case 1 As shown in Figure 1, there are A, B, C three wooden blocks on the smooth horizontal plane track, the quality of which is m_A = m_C = 2m, m_B = m, wood blocks A, B use The string is connected with a compressed spring in the middle (the spring and the block are not connected). At the beginning, the blocks A, B move at a common speed v_0, and the block C is stationary. At some point, the string suddenly disconnected, blocks A and B were bounced off, and then block B collided with C and stuck together. Eventually the speed of the three blocks was exactly the same, and the speed of B before collision with C was calculated. . Common mistakes: This question is a multi-process issue, some classmates