基础力学课程中力正负号问题的整合求解思路

根据作者多年来从事高校基础力学课程的经验,针对学生力符号易混淆的问题,文章阐述了理论力学与材料力学力符号整合求解思路,理顺了力正负号规定的关系,为学生在力学初学阶段解决疑惑,提供了一个简单有规律的力符号判断方法。

Based solve the problem of thought of force sign force sign convention on the author＇s experience of teaching basic mechanics courses for many years and in order to students＂ confusion of force sign among, the article expounds the combination and the solving in both Theoretical Mechanics and Material Mechanics, thus straightening up the relations of and providing a systematic method to judge the force sign in the preliminary studying stage.