An Ice Skater Has a Moment of Inertia of 5

question 20

Multiple Choice

An ice skater has a moment of inertia of 5.0 kg ∙ m² when her arms are outstretched,and at this time she is spinning at 3.0 rev/s.If she pulls in her arms and decreases her moment of inertia to 2.0 kg ∙ m²,how fast will she be spinning?

• A)2.0 rev/s
• B)3.3 rev/s
• C)7.5 rev/s
• D)10 rev/s

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Definitions:

Double-Entry Bookkeeping System

An accounting method that records each transaction in two accounts, ensuring the accounting equation balances.

Single-Entry System

An accounting method where each financial transaction is recorded with a single entry to the accounting records, not offering the check balance of double-entry bookkeeping.

Charges

Fees or prices asked for goods and services, or accusations made against someone in a legal context.

Payments

Transactions or transfers of money that are made to settle a debt or an account.