1) When I was spinning on my chair with my arms out I had a rotational inertia of 15 kg m and an angular velocity of 5 rad/s. How much work did it take to bring my arms in to where I had a rotational inertia of 4 kg m?? Remember the work energy theorem.

1) When I was spinning on my chair with my arms out I had a rotational inertia of 15 kg m and an angular velocity of 5 rad/s. How much work did it take to bring my arms in to where I had a rotational inertia of 4 kg m?? Remember the work energy theorem.

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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1) When I was spinning on my chair with my arms out I had a rotational inertia of 15 kg m? and
an angular velocity of 5 rad/s. How much work did it take to bring my arms in to where I had a
rotational inertia of 4 kg m2? Remember the work energy theorem.

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