1. Consider a static economy. There are neither government spending nor taxes. The total amount of time available to consumers h for simplicity is set equal to 1. Suppose the utility function of the representative consumer is given by U(C,1)= y log C+ (1 - y) logl where 0 << 1 and C is a bundle of consumption goods and I is leisure. The technology available for production can be represented as: Y = 2KaN¹-a where 0 ≤ a ≤ 1, z > 0 is total factor productivity, K is the exogenously given capital stock and N is labour. (a) Write down the social planner's problem. State the variables with respect to which the social planner maximises. (b) Find the conditions characterising the Pareto efficient allocation. Interpret them. (c) Find the real wage w and the firm profits that decentralise the Pareto efficient allocation as a competitive equilibrium.

ENGR.ECONOMIC ANALYSIS
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Chapter1: Making Economics Decisions
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1. Consider a static economy. There are neither government spending
nor taxes. The total amount of time available to consumers h for
simplicity is set equal to 1. Suppose the utility function of the
representative consumer is given by
U(C, 1) = ylog C+ (1 - 7) log l
where 0 << 1 and C is a bundle of consumption goods and I is
leisure. The technology available for production can be represented
as:
Y = 2KaN¹-a
where 0 ≤ a ≤ 1, z > 0 is total factor productivity, K is the
exogenously given capital stock and N is labour.
(a) Write down the social planner's problem. State the variables
with respect to which the social planner maximises.
(b) Find the conditions characterising the Pareto efficient allocation.
Interpret them.
(c) Find the real wage w and the firm profits that decentralise
the Pareto efficient allocation as a competitive equilibrium.
(d) Suppose the economy experiences a fall in the capital stock.
Analyse the equilibrium effects of this shock on consumption,
leisure, hours worked, profits and the real wage. Use a graphical
analysis to decompose these effects into income and substitution
effects. Explain your answer intuitively.
(e) Can changes in the capital stock explain the business cycle facts
discussed in class? Explain why or why not.
(f) What can generate a fall in capital stock? Can you provide any
real life example?
Transcribed Image Text:1. Consider a static economy. There are neither government spending nor taxes. The total amount of time available to consumers h for simplicity is set equal to 1. Suppose the utility function of the representative consumer is given by U(C, 1) = ylog C+ (1 - 7) log l where 0 << 1 and C is a bundle of consumption goods and I is leisure. The technology available for production can be represented as: Y = 2KaN¹-a where 0 ≤ a ≤ 1, z > 0 is total factor productivity, K is the exogenously given capital stock and N is labour. (a) Write down the social planner's problem. State the variables with respect to which the social planner maximises. (b) Find the conditions characterising the Pareto efficient allocation. Interpret them. (c) Find the real wage w and the firm profits that decentralise the Pareto efficient allocation as a competitive equilibrium. (d) Suppose the economy experiences a fall in the capital stock. Analyse the equilibrium effects of this shock on consumption, leisure, hours worked, profits and the real wage. Use a graphical analysis to decompose these effects into income and substitution effects. Explain your answer intuitively. (e) Can changes in the capital stock explain the business cycle facts discussed in class? Explain why or why not. (f) What can generate a fall in capital stock? Can you provide any real life example?
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