30.00 kg girl riding on the outer edge of a large merry-go-round with a 10.00 m diameter has a rotational kinetic energy of 20.00 J. Find the girl’s moment of inertia relative to the axis of rotation and find the number of revolutions the merry-go-round makes per minute.

30.00 kg girl riding on the outer edge of a large merry-go-round with a 10.00 m diameter has a rotational kinetic energy of 20.00 J. Find the girl’s moment of inertia relative to the axis of rotation and find the number of revolutions the merry-go-round makes per minute.

Physics for Scientists and Engineers: Foundations and Connections

1st Edition

ISBN:9781133939146

Author:Katz, Debora M.

Publisher:Katz, Debora M.

Chapter13: Rotation Ii: A Conservation Approach

Section: Chapter Questions

Problem 14PQ

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Question

A 30.00 kg girl riding on the outer edge of a large merry-go-round with a 10.00 m diameter
has a rotational kinetic energy of 20.00 J. Find the girl’s moment of inertia relative to the
axis of rotation and find the number of revolutions the merry-go-round makes per minute.
(use I = mr2
)

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