When a Spinning Ice Skater Pulls in His Arms,he Spins

question 67

Multiple Choice

When a spinning ice skater pulls in his arms,he spins faster because

• A)his angular momentum must be conserved,so reducing his radius must increase his speed of rotation.
• B)there is less friction with the air.
• C)there is less friction with the ice.
• D)there exists an unbalanced reaction force.

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Definitions:

1929

Refers to the year marked by the stock market crash in October, which contributed to the onset of the Great Depression.

Stagflation

An economic condition characterized by slow economic growth, high unemployment, and rising prices.

Full Employment

A state in an economy where all eligible workers who want to work at current wage rates can find employment, with no involuntary unemployment.

Recessions

Economic periods of decline characterized by falling GDP and increasing unemployment, often leading to reduced consumer spending and investment.