A 50-M Radius Playground Merry-Go-Round with a Moment of Inertia of of 2000

question 11

Multiple Choice

A 5.0-m radius playground merry-go-round with a moment of inertia of 2000 kg • m² is rotating freely with an angular speed of 1.0 rad/s.Two people,each having a mass of 60 kg,are standing right outside the edge of the merry-go-round and step on it with negligible speed.What is the angular speed of the merry-go-round right after the two people have stepped on?

• A) 0.20 rad/s
• B) 0.40 rad/s
• C) 0.60 rad/s
• D) 0.80 rad/s
• E) 0.67 rad/s

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Definitions:

Digestive Organ

An organ involved in the breakdown of food into nutrients, which the body then uses for energy, growth, and cell repair, including organs such as the stomach, liver, and intestines.

Haustra

Saccular dilations or pouches in the colon that are formed by the gathering of the longitudinal muscles of the colon.

Cementum

A specialized bone-like substance covering the root of a tooth, anchoring it to the jawbone via the periodontal ligament.

Accessory Organ

An organ that supports the function of major organs and systems, such as the pancreas in digestion.