论文部分内容阅读
“过山车”模型是圆周运动和机械能守恒定律重要的综合模型.研究和掌握“过山车”模型的基本规律,通过等效、类比的方法,可以极为简捷地分析和解答竖直平面内的各种圆周运动问题(包括在等效重力场中),有时一眼就可以看出结果了.法国科学方法论学者阿雷说:“科学的基本活动,就是探索和制定模型.”这个观点也适用于物理教学的基本活动.一、“过山车”通过环顶内侧的临界值如图1所示为过山车的基本实物图.设过山车的
The roller coaster model is an important integrated model of the circular motion and the law of conservation of mechanical energy.Based on the research and master of the basic law of the roller coaster model, the equivalent and analogy method can be used to analyze and solve the vertical plane (Including in the equivalent gravitational field), one can see the result at a glance: Arie, a French scientific methodological scholar, said: “The basic activity of science is to explore and make models.” Also applies to the basic activities of physics teaching.A, “roller coaster ” through the inner threshold of the ring top as shown in Figure 1 for the basic physical map of the roller coaster.