A Playground Carousel Is Rotating About Its Center

A playground carousel is rotating about its center.The radius of the carousel is 1.50 m,its initial angular speed is 3.14 rad/s and its moment of inertia is 125 kg m².A 40.0-kg person climbs onto the carousel near its outer edge.What is the angular speed of the carousel after the person climbs aboard?

A) 1.41 rad/s
B) 1.57 rad/s
C) 1.83 rad/s
D) 3.14 rad/s

Correct Answer:

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