C5. Prove analytically, that for the production function in the intensive form y = f(k) ƏY the expression for MPL = takes the form MPL = A[f(k) — kf'(k)]. Find the growth rate of real wage w = W/P for every moment in time and on the balanced growth path. ƏL
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- Consider an economy described by the Solow model with the following production function: Y = F(K, L) = K“ (L)'-« L grows at the rate n, the depreciation rate is 8, and the country saves a constant fraction s of its income. The change in capital per-worker is given by Ak = sy – (n+ 8)k. (a) Derive the per-worker production function. (b) Assuming population growth equals n and the depreciation rate equals 8, find the steady state level of capital per worker. It will depend on a, s, n and 8. Imagine the economy begins at the steady state you found in part b. Then there is a war that destroys a substantial amount of the economy's capital. The war does not affect the size of the labor force, population growth, the depreciation rate, or the saving rate. c) What is the immediate effect of the war on output per worker? Explain. d) After the war, is the growth rate of output per worker higher or lower than it was in steady state? Explain. e) How does the war affect steady state output per…Consider a standard Solow growth model. Denote capital stock as K, population as N, capital depreciation rate as d, saving rate as s, output as Y. Output is produced by a representative firm according to the production function Y=zF(K, N), where z is current total factor productivity. The law motion for capital is K' = (1 - d)K + I, where K' is the future capital stock. Population grows at a constant rate n, that is N' = (1 + n)N, and household supply labor inelastically, so population equals labor force. (a) In a graph, show the steady state level of capital per worker. Use lower case letters to denote per-capita terms and use * to denote steady state.(b) Suppose a country is initially at a steady state, then a war destroyed some of its capital stock. Determine the long run effects on the quantity of capital per worker and on output per worker in the steady state. Show by a graph. (C)Define golden rule saving rate. What does it maximize? Determine the effects of a decrease in the…Assume that in the Solow model the aggregate production function takes the Cobb-Douglas form: Y = 8K“ (AL)'-a where Y is output, K is capital input, L is labour input, and A is the level of labour- augmenting technical progress. Capital grows through investment but also decays due to wear and tear at a constant rate per period. Assume that A is growing at the exogenous rate g, that L is growing at the exogenous raten, and that households save a constant proportion s of their income. There is perfect competition in the markets for output and the inputs. a. Find the steady-state level of output per unit of labour in terms of A and the parameters of the model. What is the growth rate of total factor productivity (TFP) in terms of the parameters of the model? b. Find the steady state level of the capital-output ratio (k/y) in terms of the parameters of the model. c. Write down an expression for consumption per effective labour (c*) in the long run and show how it is affected by an increase…
- In the Solow Growth Model, a country's production function is defined by the following: Y = F (K/L) = kºs Where K is capital and I. labour; labour grows at a rate (n), and the economy faces depreciation at a rate (8) The initial Capital Stock per worker: k, = 9 units The savings rate: s = 0.20 and the rate of depreciation: a = 0.1 Using equations and identities from the Solow Growth Model, calculate the level of capital k, Output y, Consumption c, depreciation and change in capital from the equation of motion for periods 1, 2 and 3. Comment on the accumulation of capital and output over the three periods.Consider the basic Solow growth model. Let the aggregate production function be defined as Y = F(K, L) = K0.5 L0.5 where Y is output, K is capital, and L is labor. Furthermore, let the saving rate be 48%, population growth be 2%, and depreciation rate be 10%. a. Find the steady-state levels of capital per worker k and output per worker y.. %. b. Now assume that, because of the proliferation of financial technologies, the saving rate increases suddenly to 54% after one year. The steady-state level of capital will increase by ____%, and the steady-state level of output will increase by_Country A and country B both have the production function Y = F(K, L) = K1/3L2/3 Does this production function have constant returns to scale? Explain. Find Solow’s production function, y = f (k)? Assume that neither country experiences population growth or technological progress and that 20 percent of capital depreciates each year. Assume further that country A saves 10 percent of output each year and country B saves 30 percent of output each year. Find the steady-state level of capital per worker for each country, then find the steady-state levels of income per worker and consumption per worker. Suppose that both countries start off with a capital stock per worker of 2. What are the levels of income per worker and consumption per worker? Remembering that the change in the capital stock is investment less depreciation, use a calculator (or, better yet, a computer spreadsheet) to show how the capital stock per worker will evolve over time in both countries. For…
- Consider the Solow model with a production function Y(t) = A*K(t)αL(t)1-α, Where A is a fixed technological parameter. Explicitly solve for the steady-state value of the per capita capital stock and per capita income. How do these values change in response to a rise in (a) the technological parameter A, (b) the rate of saving s, (c) α , (d) δ, the depreciation rate, and the population growth rate n?Assume a production function is Cobb - Douglas in capital and labour. Y = ZF(K, N) = zK\alpha N1-\alpha (a) Derive the per worker production function, y = zf (k) where y = Y/N, k = K/N (b) Use the Solow Model to derive the steady state level of capital per worker, for given s, d and n. (c) Show diagrammatically the impact on the steady state solution of i) a rise in z; ii) a rise in s, using both the Solow Model diagram and time path diagrams of Iny and Inc. (d) Showdiagrammatically (ideallysupplementedwithkeyequations)howtode rive the Golden Rule, and explain why this matters for your answer to part c) ii) (e) Show diagrammatically the impact of a fall in n, in the short and long termConsider the Solow model with a production function Y(t) = A*K(t)^α*L(t)^(1-α), Where A is a fixed technological parameter. Explicitly solve for the steady-state value of the per capita capital stock and per capita income. How do these values change in response to a rise in (a) the technological parameter A, (b) the rate of saving s, (c) α , (d) δ, the depreciation rate, and (e) the population growth rate n?
- Consider the Solow model with no technological progress and population growth rate of n. The production function in intensive form is given by y = f(k) = Bk"B. (a) Find the expression for the steady-state value of per capita capital stock (k*). [Hint: s.f(k*) = (n+ 8).k*] (b) Now suppose the population growth rate and the depreciation rate is each equal to 1 percent (n=0.01, 8 = 0.01). Calculate the steady-state value of per capita capital stock given the exogenous rate of saving rate of s = 0!2 and a = 0.5 & ß = 0.4.Consider the Solow Growth Model studied in Chapter 5 with the following information: The production function is: Y₁ = AK₁¹/³L2/3 Amount of labor (Lt) = 1000 Investment rate (s) = 0.1 Depreciation rate (d) = 0.4 Productivity (A) = 1 Find the numerical value of the steady-state level of output per person.This part considers a modified version of the Solow growth model. Suppose the production function is given by F(K,bN) = Kª(bN)!-ª where b is the labour augmenting technology, which grows at a rate f, i.e., bt+1 = (1+ f)bt. For simplicity, assume that the total factor productivity z = 1, and the population is constant, i.e., N, = N for all t. The rest of the model is the same as in the standard Solow model in the textbook. Especially, the aggregate capital stock evolves according to K++1 = It + (1 – d)Kį. And assume that the economy is still closed, and there is no government. For any aggregate variable X, let the lower case letter a be the variable per effective unit of worker; that is x = *. Show that the production technology specified above satisfies the assumption of con- stant returns to scale. List all the equilibrium conditions of this model. Using the equilibrium conditions you listed above, write down an expression that describes the evolution of the aggregate capital stock,…