12.1 Moment of momentum of a particle and its system 12.2 The moment of inertia of a rigid body against an axis 12.3 theorem of moment of momentum 12.4 Differential equation of a rigid body rotating about a fixed axis 12.5 Theorem of moment of momentum of a system of particles relative to the center of mass 12.6 Differential equations of motion in a rigid body plane
《国际经济学》课程教学课件（讲稿）第20章 浮动与固定汇率、欧洲货币体系与宏观经济政策的协调 Flexible versus Fixed Exchange Rates, the European Monetary System, and Macroeconomic Policy Coordination
Long run – prices flexible – output determined by factors of production & technology – unemployment equals its natural rate Short run – prices fixed – output determined by aggregate demand – unemployment is negatively related to output
