关於“力的合成和分解”的教学,茲就個人初步考慮到的一些問题提出幾點不成熟的意見,希望大家在參考之餘,展開討論,並給以批评和指正。 (一)本章的教学目的课本前幾章所講的是关於質點的動力学,從分析直線運动的現象開始,紧接着闡述運動定律和討論運动的合成,最後达到能量守恒定律這一具有普遍意義的结論。本章所論述的,就力学的整個系統而論,則是所谓“剛體靜力学”。但本書並沒有引用“動力学”和“靜力学”等名稱,这是因為本章所給學生的是物理学中的力学基礎知識,内容比較簡單,方法也比較淺易,還不需要作“動力学”和“靜力学”的分類;而更重要的,則是由於這樣就能使学生對力學现象作全面的和聯繫的觀察與了解,把“靜”和“动”的相對意義與依存关系系統地統一結合在本書第一至第六各章之中。試看,在本章第一節(课 Regarding the teaching of “synthesis and decomposition of forces,” I hereby put forward some immature opinions on some issues that individuals first considered. I hope everyone will start their discussions while criticizing and correcting them. (A) the purpose of this chapter teaching The text of the previous chapters are about the particle dynamics, starting from the analysis of the phenomenon of linear motion, followed by elaboration of the law of motion and discuss the synthesis of the movement, and finally reached the law of conservation of energy with the General conclusions. As discussed in this chapter, the whole system of mechanics is called “rigid body statics.” However, this book does not quote the names of “kinematics” and “statics”. This is because the students in this chapter are basic mechanics in physics. The content is relatively simple and the method is relatively simple. “And” statics “; and more importantly, because it enables students to observe and understand the phenomenon of mechanics comprehensively and closely, and the relative meaning and dependence of the” static “and” moving "systems Unified in the first chapter to the sixth chapter of this book. Take a look at the first section of this chapter (lesson