Question

Suppose the following represents the economy Y = F (K, L) = √ KL s =...

Suppose the following represents the economy

Y = F (K, L) = √ KL
s = 0.3
δ = 0.1
k0 = 4

Suppose that the steady-state occurs in the year “SS” above. Calculate the steady-state level of capital per worker, and fill in the remaining rows, (SS) to (SS+2).

What do you notice happens to economic growth, gy, once steady state is reached (and beyond the steady state)? Why does this happen?

Note: Economic growth is

gY = Yt – Yt-1/ Yt-1

Since, in this model there is no population change, this is the same as

gY = (Yt/L – Yt-1/L) / (Yt-1/L)

= yt – yt-1 / yt-1 = gy

Year k y gy i

δk

∆k

SS

N/A

SS + 1

SS + 2

Homework Answers

Answer #1

We have the following function and parameters

Y = F (K, L) = √ KL

Per worker production function y = √k
s = 0.3
δ = 0.1
k0 = 4

At the steady-state level of capital per worker, we have kss/yss = s/δ

kss/√kss = 0.3/0.1

√kss = 3

kss = 9.

This is the steady state of capital per worker

Below is the table showing k at time 0 equal to kss = 9 and kss + 1 and kss + 2. We see that output per worker falls with time because as the steady state is surpassed, economic growth retards

Time k y gy i δk ∆k
0 9 3.000 0.900 0.090 0.810
1 9.810 3.132 4.403 0.940 0.094 0.846
2 10.656 3.264 4.221 0.979 0.098 0.881
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