Changes in Market Equilibrium

Understanding Supply and Demand Dynamics

  • The video discusses how supply and demand might change due to various market factors, affecting equilibrium price and quantity.

Scenario 1: Invention of Disease-Resistant Apples

  • Initial Condition: Standard supply and demand curves are established.

  • Event: Invention of a new disease-resistant apple.

    • Impacts growers by reducing the number of apples lost to disease, allowing for increased production.

  • **Supply Shift: **

    • At any price point, the quantity supplied of apples increases.

    • The supply curve shifts to the right (increase in supply).

    • Minimum price required for apple production decreases.

  • Equilibrium Change:

    • Original equilibrium price is noted, new equilibrium price is established lower.

    • Result: Price decreases as supply increases; quantity supplied rises.

Scenario 2: Release of Study on Apples and Cancer Prevention

  • Initial Condition: Supply and demand curves established before news.

  • Event: Study shows apples can help prevent cancer.

    • Increases consumer preference for apples, leading to higher demand.

  • Demand Shift:

    • At any price point, quantity demanded for apples increases, leading to shift of demand curve to the right (increase in demand).

  • Equilibrium Change:

    • Original equilibrium price and quantity, new equilibrium price increases.

    • Result: Both price and quantity increase; more consumers want apples.

Scenario 3: Impact of Pear Cider Advertising

  • Initial Condition: Apples and pears are substitutes; supply and demand curves established.

  • Event: Pear cider advertising campaign attracts consumers.

    • Demand for pear cider increases, leading demand for apple cider to decrease.

  • Demand Shift for Apples:

    • Demand for apples shifts to the left (decrease in demand).

  • Supply Shift for Apples:

    • Farmers may reallocating resources to pears due to increased demand.

    • Supply of apples shifts to the left (decrease in supply).

  • Equilibrium Change:

    • Both the demand and supply curve shift to the left.

    • Resulting equilibrium price could potentially remain unchanged, but equilibrium quantity decreases.

    • Result: Quantity of apples available decreases.

Additional Scenarios

  • Significant Supply Change:

    • Severe leftward shift in supply may lead to increased equilibrium price while quantity decreases.

  • Minor Supply Shift:

    • If supply shifts slightly, a decrease in quantity occurs but equilibrium price may remain stable.

  • Labor Costs Increase:

    • Unionization leads to labor cost increases affecting production costs.

    • Supply Shift:

    • Supply curve shifts to the left resulting in higher equilibrium price and lower equilibrium quantity.

Conclusion:

  • Understanding these dynamics assists in predicting how various changes impact supply, demand, prices, and quantities in different markets.

  • Encourages thinking of other market scenarios beyond the apple market.