论文部分内容阅读
例题如图1所示,两个用细线相连的位于光滑水平面的物块,质量分别为m_1和m_2,拉力F与细线在同一水平面上,试求在两个物块运动过程中细线的拉力F_T。解题方法先整体,再隔离。解答过程根据牛顿第二定律先整体列方程得F=(m_1+m_2)a再根据牛顿第二定律隔离m_2列方程得F_T=m2a解答结果 F_T=F·m_2/m_1+m+2变式一如图2所示,两个用细线相连的位于粗
Example As shown in Figure 1, the two blocks connected by thin lines are located at smooth level. The masses are m_1 and m_2. The pulling force F is on the same horizontal plane as the thin line. Rally F_T. Problem-solving method first overall, and then isolated. According to the second law of Newton's solution, the first column equation is F = (m_1 + m_2) a and then the equation of m_2 is isolated according to Newton's second law. F_T = m2a The result of the solution F_T = F · m_2 / m_1 + m + 2 Variant 1 As shown in Figure 2, the two are connected by a thin line located in the rough