“力”是力学中贯穿始终的基本概念．在中国，“力”这一字的起源，可以追溯到商时期的甲骨文中．甲骨文的“力”字写作“”，表示象来（来，读lei，古代的一种农具，象木叉──编者注）那样的尖壮起立农具．将一极削成尖状的本标插入土中，挖泥土翻起，这种劳动需要人的体力． “Force” is the basic concept throughout mechanics. In China, the origin of the word “force” can be traced back to the Oracle of Shang Dynasty. Oracle’s “force” word “” is a sign that stands out as a stand-out farm tool like come (come and read lei, an ancient agricultural implement, like a wooden fork - editor’s note). Inserting a sharp-edged tip into the earth and digging up the earth, this kind of labor requires human strength.