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进入高中以后,学生对物理习题感到棘手,我们的习题教学如何提高学生解决物理问题的灵活性呢?下面我通过一道力学选择题的教学经历谈谈我的一点看法.(单项选择题)如图1所示,带同种电荷大小不计的两个小球a和b,分别静止在竖直墙面A处和光滑水平地面B处,AO=BO.A球此时受摩擦力向上,且与墙面间动摩擦因数为μ=0.5,B被光滑竖直挡板挡住,a球由于漏电而缓慢下移到A’处,在
After entering high school, students are struggling with physical exercises. How can our exercises improve the students’ flexibility in solving physical problems? Let me talk about my point of view through the teaching experience of a mechanical multiple-choice question. 1, the two small balls a and b with the same charge size remain stationary at the vertical wall A and the smooth horizontal ground B, AO = BO. A. The ball is now subject to upward friction and Dynamic friction coefficient between the wall μ = 0.5, B is blocked by a smooth vertical baffle, a ball due to leakage and slowly down to A ’at