三角形法在力学平衡问题中的应用

• 作 者: 陈仕清
• 机 构: 湖北省荆门市龙泉中学,
• 出 处: 求学
• 发表日期: 2002年05期
• 关键词: 高中物理 解题方法 三角形法 力学平衡 分析实例 共点力 题设 相似三角形 学习过程 几何知识

由于平衡问题是实际生活中常见到和用到的知识,故它是高中物理的一个重点,而如何处理这类问题又是高中物理的难点。我们在学习过程中通常的处理办法,是按以下几个步骤进行的:讲授知识→介绍现象→分析实例→归纳办法。这乍看起来像有序,实则无序,让学生无从把握。实际上分析这类问题时要抓住重点,即突出解题方法就足够了。而在这些方法中又以三角形法为最简单最常见,故

Since the balance problem is a common knowledge in practical life, it is a key point of high school physics. How to deal with such problems is also a difficult point of high school physics. Our usual approach in the learning process, is based on the following steps: teaching knowledge → Introduction phenomenon → analysis examples → induction method. At first glance, it looks like an orderly, but in fact disorderly, so that students can not grasp. In fact, we should grasp the key points when analyzing such problems, that is, it is enough to highlight the problem solving methods. In these methods and the triangle method is the most simple and most common, so