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平抛物体的运动是曲线运动一章的重点,是一种最基本、最重要的曲线运动,而用实验探究分析、归纳其运动规律又是该章的难点。为了化解平抛运动的教学难点,笔者设计了验证平抛运动在竖直方向作自由落体运动实验及实验仪器。下面,笔者简介该平抛运动趣味演示器的构造、演示功能及原理。一、平抛运动趣味演示器的构造如图1所示,主要部件有:横梁、弹簧枪、支架、导杆、水准仪、碰片、小球1、小球2。
The movement of flat paraboloid is the focus of the chapter of curvilinear motion, which is one of the most basic and important curvilinear movements. It is also a difficult point of this chapter to use experimental exploration and analysis to generalize the law of its movement. In order to resolve the teaching difficulty of flat throwing exercise, the author designed the experiment and experimental equipment to verify the flat throwing movement in the vertical direction for free falling body movement. Next, the author describes the structure of the flat throw exercise fun demonstrator, presentation features and principles. First, the flat cast throwing fun The structure of the demonstrator shown in Figure 1, the main components are: beams, spring guns, brackets, guides, level, touch film, ball 1, ball 2.