A Merry-Go-Round of Radius R = 2

question 101

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:

Netherlands

A country in Northwestern Europe known for its flat landscape, extensive canal system, windmills, tulip fields, and cycling routes.

Hunter-Gatherer Societies

Communities that subsist by hunting, fishing, and harvesting wild food, often with nomadic lifestyles.

Recuperate

To recover or regain health, strength, or energy after illness, injury, or exertion.

Exponential Growth

A pattern of data that escalates at an increasingly rapid rate, often used to describe population growth, infection rates, or compounding interest.