Dynamic equilibrium

Whereas in a static equilibrium all quantities have unchanging values, in a dynamic equilibrium various quantities may all be growing at the same rate, leaving their ratios unchanging. For example, in the neoclassical growth model, the working population is growing at a rate which is exogenous (determined outside the model, by non-economic forces). In dynamic equilibrium, output and the physical capital stock also grow at that same rate, with output per worker and the capital stock per worker unchanging. Similarly, in models of inflation^[8] a dynamic equilibrium would involve the price level, the nominal money supply, nominal wage rates, and all other nominal values growing at a single common rate, while all real values are unchanging, as is the inflation rate.

The process of comparing two dynamic equilibria to each other is known as comparative dynamics. For example, in the neoclassical growth model, starting from one dynamic equilibrium based in part on one particular saving rate, a permanent increase in the saving rate leads to a new dynamic equilibrium in which there are permanently higher capital per worker and productivity per worker, but an unchanged growth rate of output; so it is said that in this model the comparative dynamic effect of the saving rate on capital per worker is positive but the comparative dynamic effect of the saving rate on the output growth rate is zero.

Economic growth

Economic growth is the increase in the amount of the goods and services produced by an economy over time. It is conventionally measured as the percent rate of increase in real gross domestic product, or real GDP. Growth is usually calculated in real terms, i.e. inflation-adjusted terms, in order to obviate the distorting effect of inflation on the price of the goods produced..

In economics, "economic growth" or "economic growth theory" typically refers to growth of potential output, i.e., production at "full employment", which is caused by growth in aggregate demand or observed output

As an area of study, economic growth is generally distinguished from development economics. The former is primarily the study of how countries can advance their economies. The latter is the study of the economic aspects of the development process in low-income countries.

As economic growth is measured as the annual percent change of gross domestic product (GDP), it has all the advantages and drawbacks of that measure. Measuring economic growth

Economic growth is measured as a percentage change in the Gross Domestic Product(GDP) or Gross National Product (GNP). These two measures, which are calculated slightly differently, total the amounts paid for the goods and services that a country produced. As an example of measuring economic growth, a country which creates $9,000,000,000 in goods and services in 2010 and then creates $9,090,000,000 in 2011, has a nominal economic growth rate of 1% for 2011.

Factors affecting economic growth: There are several factors affecting economic growth, but it is helpful to split them up into:

Demand side factors

Supply side factors

Demand Side Factors Influence Growth of Aggregate Demand (AD)

• AD= C+I+G+X-M. Therefore a rise in Consumption, Investment, Government spending or exports can lead to higher AD and higher economic growth.

• Levels of infrastructure. Investment in roads, transport and communication can help firms reduce costs and expand production. Without necessary infrastructure it can be difficult for firms to be competitive in the international markets. This lack of infrastructure is often a factor holding back some developing economies.

• Human Capital. Human capital is the productivity of workers. This will be determined by levels of education, training and motivation. Increased labour productivity can help firms take on more sophisticated production processes and become more efficient.

• Development of Technology. In the long run development of new technology is a key factor in enabling improved productivity and higher economic growth.

• Commodity Prices. A rise in commodity prices such as a rise in oil prices can cause a shock to growth. It causes SRAS to shift to the left leading to higher inflation and lower growth. Political Instability. Political instability can provide a negative shock to growth. Weather. The exceptionally cold or hot weather, lead to a shock fall in GDP

There are 4 types of economic growth: 1.Balanced Economic Growth 2.Un-balanced Economic Growth

• 3. Extensive

• 4. Intensive

• 1.Balanced Economic Growth: All the economic sectors are growing at same ratio or percentage,this growth is known as balanced economic growth. 2.Un-balanced Economic Growth: When some sectors of the economy are growing faster than others,and their rate of growth is different to each other,this growth is known as un-balanced economic growth.

• 3.Extensive Economic Growth: Economic growth is achieved by increasing number of production factors

• 4.Intensive Economic Growth: Economic growth is achieved by increasing quality of production factors, i.e. using of new quality raw materials, new technology and others