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

question 10

Multiple Choice

A 5.0-m radius playground merry-go-round with a moment of inertia of $$2000 \mathrm {~kg} \cdot \mathrm { m } ^ { 2 }$$ is rotating freely with an angular speed of 1.0 rad/s. Two people, each of mass 60 kg, are standing right
Outside the edge of the merry-go-round and suddenly step onto the edge with negligible speed
Relative to the ground. What is the angular speed of the merry-go-round right after the two people
Have stepped on?

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

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Immune System

The complex network of cells, tissues, and organs that works together to defend the body against pathogens.

Red Blood Cell

Erythrocyte; contains hemoglobin and carries oxygen from the lungs or gills to the tissues in vertebrates.

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A model describing the structure of cell membranes, where various proteins float in or on the fluid lipid bilayer like boats on a pond.

Plasma Membrane

The lipid bilayer that forms the outer boundary of a cell, controlling the movement of substances in and out of the cell.