功率是物理学中的的一个重要概念.在考试中常有计算功率或运用功率概念进行计算的问题.本文拟归纳几类功率问题的求解方法,并举例分析. 一、恒力的功率恒力的功率P=Fvcosθ,式中F是恒力的大小,V是物体速度的大小,θ是恒力与速度方 Power is an important concept in physics. In the examination, there are often problems of calculating power or using power concept to calculate. This paper proposes to generalize the solving methods of several types of power problems, and gives an example for analysis. I. Constant power constant power Power P=Fvcosθ, where F is the magnitude of the constant force, V is the magnitude of the object velocity, and θ is the constant force and velocity