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在理论力学的教学中,学生反映“理论易懂,做题难”。所谓“做题难”,一般从解平面一般力系的习题时开始表现出来。平面一般力系是静力学中的重点内容。它的重要性不仅表现在工程中的大量问题可以抽象为平面一般力系来研究,而且本章的内容能够起到承前启后的作用。所谓承前作用,就是要综合应用前几章的理论,对平面问题加以总结;所谓启后作用反映在研究空间一般力系能够打下基础。收集在本章中的习题量多,有一定难度,要求学生做的作业也较多。这堂习题课的任务就是要配合理论课教学,启发和引导学生找到解题的基本方法和科学的解题思路,从“难”中找到可循的规律,使学生应用、巩固、深化已学的理论知识。
In the teaching of theoretical mechanics, students reflect “the theory is easy to understand and difficult to do”. The so-called “difficult” to do, generally from the plane force of general problems when the exercise began to show. Plane force is the focus of static mechanics. Its importance is not only manifested in the fact that a large number of problems in engineering can be studied in terms of the general plane force, but also the contents of this chapter can play a leading and influential role. The so-called predecessor role, is to comprehensively apply the theory of the previous chapters, to sum up the problem of plane; the so-called Kai after the role of the general force in the research space to lay the foundation. The amount of exercises collected in this chapter, there is a certain degree of difficulty, require students to do more homework. The task of this exercise class is to cooperate with the theory of teaching, inspire and guide students to find the basic method of solving problems and scientific problem-solving ideas, from the “difficult” to find the rules that follow, so that students apply, consolidate, deepen has learned Theoretical knowledge.