A Merry-Go-Round with a Moment of Inertia of 6

question 107

Multiple Choice

A merry-go-round with a moment of inertia of 6.78  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.

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