Imagine a housing market where a small, speculative increase in home prices encourages more buyers to enter the market, which in turn drives prices even higher. This cycle continues, pushing prices further and further from their initial level. Which physical analogy best illustrates the nature of this market's initial price level?

Match each economic scenario to the physical analogy that best describes the nature of its equilibrium.

Analyzing Market Stability with a Physical Analogy

Analyzing Market Stability with a Physical Analogy

In the physical analogy used to describe market equilibria, a ball resting at the bottom of a valley represents an unstable equilibrium because any external shock will be amplified by the force of gravity, causing the ball to move permanently to a new position.

Explaining Equilibrium with a Physical Analogy

In the physical analogy of a ball on a surface used to illustrate market equilibria, consider the role of the force of gravity after a small external nudge is applied to the ball. What is the fundamental difference in how this force operates between a stable and an unstable equilibrium?

Consider a market where a small, temporary disruption (like a brief factory shutdown) causes the price of a good to increase. However, market forces soon cause the price to return to its original level. In the physical analogy of a ball on a surface, what element represents the underlying market forces that guide the price back to its initial state?

Evaluating a Model of Economic Equilibrium

In the physical analogy used to illustrate market stability, a ball's position represents the current market price. A stable market is likened to a ball in a valley, while an unstable one is like a ball on a hilltop. What fundamental feature of the 'landscape' (the valley or hill) determines whether the equilibrium is stable or unstable?