A diver jumps off the springboard fully extended with a moment of inertia of 20 kg⚫m² and an angular velocity of 3 rad/sec. The diver tucks and lowers her moment of inertia to 5 kg⚫m². a. What is the angular momentum of the diver before she tucks? b. What is the rotational kinetic energy of the diver before she tucks? c. What is the angular momentum of the diver after she tucks? d. What is the angular velocity of the diver after she tucks? e. What is the kinetic energy of the diver after she tucks? f. If the answers to parts (b) and (e) are different from each other, why is there a change in kinetic energy? Where did the energy come from/go to?

A diver jumps off the springboard fully extended with a moment of inertia of 20 kg⚫m² and an angular velocity of 3 rad/sec. The diver tucks and lowers her moment of inertia to 5 kg⚫m². a. What is the angular momentum of the diver before she tucks? b. What is the rotational kinetic energy of the diver before she tucks? c. What is the angular momentum of the diver after she tucks? d. What is the angular velocity of the diver after she tucks? e. What is the kinetic energy of the diver after she tucks? f. If the answers to parts (b) and (e) are different from each other, why is there a change in kinetic energy? Where did the energy come from/go to?

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 71PQ: A long, thin rod of mass m = 5.00 kg and length = 1.20 m rotates around an axis perpendicular to...

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