高中物理教材中恒力对物体做功的计算式为W=Fscosα。在中学物理解题过程中经常遇到变力做功问题,本文就常见的变力做功的解题方法进行归纳。一、将变力转化为恒力如果力的大小不变,而力的方向按照某种规律发生变化的时,可通过转移对象将变力做功转化为恒力做功。 In high school physics textbook, the constant force works on the object as W = Fscosα. In the middle school physics problem-solving process often encounter variable power work problems, this article on the common variable power work to solve the problem. First, the variable into constant force If the force of the same size, while the direction of the force changes in accordance with a certain law, the object can be transferred by the variable force into constant work done.