A Merry-Go-Round with a Moment of Inertia of 6 $\times$ 10³ Kg · M² Is Coasting at 2

question 22

Multiple Choice

A merry-go-round with a moment of inertia of 6.78 $\times$ 10³ kg · m² is coasting at 2.20 rad/s.When a 72.6-kg man steps onto the rim,the angular velocity decreases to 2.0 rad/s.The radius of the merry-go-round is

• A)3.06 m
• B)3.66 m
• C)4.27 m
• D)4.88 m
• E)5.49 m

---

Definitions:

Interest Rate Parity

A theory which suggests that the difference in interest rates between two countries is equal to the expected change in exchange rates between their currencies.

Approximation Formula

A mathematical equation or expression used to estimate a value or to simplify calculations.