A Merry-Go-Round of Radius R = 2

question 39

Multiple Choice

A merry-go-round of radius R = 2.0 m has a moment of inertia I = 250 kg⋅m², and is rotating at 10 rpm. A child whose mass is 25 kg jumps onto the edge of the merry-go-round, heading directly toward the center at 6.0 m/s. The new angular speed (in rpm) of the merry-go-round is approximately

• A) 10
• B) 9.2
• C) 8.5
• D) 7.1
• E) 6.4

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Definitions:

Eating Behaviors

Patterns or habits related to how individuals consume food, including food choices, eating speed, and meal timing, which can impact overall health.

Enjoyable Exercise

Physical activity that is pleasing and fun, encouraging regular engagement and promoting health.

Modest Goal

A goal that is reasonable, realistic, and attainable, without being overly ambitious.

Gradually Increase

The process of slowly raising the level, amount, or intensity of something, often used in contexts like exercise, workload, or medication dosage.