A Turntable Has a Moment of Inertia of 3

question 19

Multiple Choice

A turntable has a moment of inertia of 3.00 *10^-2 kg·m² and spins freely on a frictionless bearing at 25.0 rev/min. A 0.600-kg ball of putty is dropped vertically onto the turntable and sticks at a point 0.100 m from the center. What is the new rate of rotation of the system?

• A) 20.8 rev/min
• B) 22.7 rev/min
• C) 33.3 rev/min
• D) 27.2 rev/min

---

Definitions:

Inflation

A sustained increase in the general price level of goods and services in an economy over a period of time, leading to a decrease in the currency’s purchasing power.

Phillips Curve

A macroeconomic model describing an inverse relationship between rates of unemployment and corresponding rates of inflation, suggesting that inflation and unemployment have a stable and inverse relationship.

Federal Reserve

The central bank of the United States, responsible for regulating the US monetary and financial system.

Money Supply

The comprehensive pool of financial assets in an economy at any given time, which includes coins, cash, and the amounts in both checking and savings accounts.