ENGR.ECONOMIC ANALYSIS
14th Edition
ISBN: 9780190931919
Author: NEWNAN
Publisher: Oxford University Press
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Consider the Production Function: Y=0.5√K√N
a) Derive the steady-state levels of output per worker and
capital per worker in terms of the saving rate (s) and the
b) Derive the equation for steady-state output per worker and
steady-state consumption per worker in terms of the saving
rate (s) and the depreciation rate.
c) Suppose depreciation is 5% and savings rate is 10%.
Calculate the steady-state output per worker.
d) Now suppose the savings rate increases to 20%. What is the
new steady-state output per worker?
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- 9 Based on the production function Y = AKaG1-a (with G representing public expenditure, and the remaining variables and parameters representing usual values), show, using the necessary assumptions the value of the tax amount that maximizes the economic growth rate. Then, represent graphically the situation.arrow_forwardSuppose that the populist leader of our imaginary country increases the savings rate from 13% to 15%, i.e., (s = 0.15), what is the new steady state level of capital per worker? [Note: Assume that the other parameters n and d remain unchanged.]arrow_forward3) Suppose your per capita production function is given as y = k". Capital evolves according to the expression Ak = sy – (n +d)k, and your consumption function is c = (1– s)y. As usual, s is the savings rate, n is the - population growth rate and d is the capital depreciation rate. Imagine a foreign government decides to grant your country an investment subsidy in the form of b, which represents a constant fraction of domestic investment per capita (ia) such that irotal = ia + bia. In per capita terms the expenditure function with the subsidy is y = c + itotal and it is y = c + ia without the subsidy. a) Derive an expression for the steady state capital stock after the subsidy is granted. (Hint: Use the expenditure function with the subsidy to solve for sy then use the expenditure function without the subsidy to solve for domestic investment ia.) b) Use the Solow diagram to show living standards before and after the subsidy is granted. Explain the dynamic process towards the new steady…arrow_forward
- 1 1 1. Assume that a country's production function is Y = K2L2. Assume there is no population growth or technological change What is labor productivity computed from the per-worker production function? Is this value the same as labor productivity computed from the original production function а. b. Assume that 10 percent of capital depreciates each year. What gross saving rate is necessary to make the given capital-labor ratio the steady-state capital-labor ratio? (Hint: In a steady state with no population growth or technological change, the saving rate multiplied by per-worker output must equal the depreciation rate multiplied by the capital-labor ratio.)arrow_forwardConsider the basic Solow model with production function Y = K0.25 N0.75, saving rate of 20% and depreciation rate of 10%. Which of the following is true? The saving rate is: less than the golden rule' saving rate, hence the economy is saving too much less than the golden rule' saving rate, hence the economy is saving too little greater than the `golden rule' saving rate, hence the economy is saving too much greater than the `golden rule' saving rate, hence the economy is saving too littlearrow_forwardConsider the Solow model with Cobb-Douglas production function with productivity parameter A, exponents on capital equal to 1/4, and exponent on labor equal to 3/4. Derive the MPL funcion as a function of K, L and constant A Note: xa is the same as x power a O (3/4) A(K/L) 0.25 O(1/4) A(L/KY0.76 O (1/4) A(KML)+0.75 O (3/4) A(UK) 0 25arrow_forward
- Assume that the production function for a country is given by Y=√K and annual investment is given by the function I=γ×YI where γ=0.280, and that the yearly depreciation rate is 4.67%. Suppose that this year, the output in the country is 1, and a neighbor country's output is 50% higher. Calculate the time it would take for the country's output to catch up with its neighbor's output. Assume the neighbor country's economy is neither growing nor shrinking.arrow_forwardQ4) Production Functions and Growth (a) Time is continuous and the production function of the economy is given by (1) Y¢ = ( K¢ )ª( A¿N; )1-« Total factor productivity evolves according to (2) A = egt Ao such that A where the growth rate of technological progress g is exogenous. Population grows at an exogenous rate n according to (3) N{ = ent No with No = 1 such that = n Find an expression for the growth rate of (i) output per capita (Yt / Ni) and (ii) output per effective worker ( Yt/ (A:N:) ). When is the growth rate of (ii) equal to zero?arrow_forwardConsider an economy that exhibits both population growth (L grows at rate n) and technological progress (A grows at rate a) described by the production function, Y = F(K,AL) = Kª(AL)¹-α| Here K is capital and Y is output. (a) Show that this production function exhibits constant returns to scale. What is the per-effective-worker production function? (c) Find expressions for the steady-state capital-output ratio, capital stock per effective worker, and output per effective worker, as a function of the saving rate (s), the depreciation rate (8), the population growth rate (n), the rate of technological progress (a), and the coefficient a. (You may assume the condition that capital per effective worker evolves according to Ak = sf (k) − (a +n+8)k.) (d) Show that at the Golden Rule steady state the saving rate for this economy is equal to the parameter a.arrow_forward
- Draw a graph with the following elements: A Solow growth (Y) function where Y= square root of K An investment (I) function where I = % * Y A depreciation (D) function where D = % * Karrow_forward9. Suppose there is no population or technological growth. Define k as the capital-to-labor ratio. If the per worker production function is given by y = ¹/2, the saving ratio is 0.3, and the depreciation rate is 0.1, then the steady state capital per worker ratio is (a) 1 (b) 2 (c) 4 (d) 6 9arrow_forwardProblem 2 In class, we argued that if people could accumulate human as well as physical capital, the production function would look like the "AK" production function. (a) If the production function is AK and the savings rate is constant at rate "s", and the rates of depreciation and population growth are 8 and n respectively, what would the growth rate of the economy be? (b) What would be the macroeconomic consequences of increasing the savings rate in this economy? Explain using the model and intuitively. (c) What would be the consequences of an increase in fertility in this economy? Are these consequences good or bad? Is this answer unambiguous? (d) How are human and physical capital different from one another in the way they evolve from period to period? (e) Does human capital have an upper limit? If it does, what is the resulting production function when this is reached and the growth rate of the economy? If it doesn't have a limit, what is the resulting growth rate of output as it…arrow_forward
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