College Physics (7th Edition)

by Wilson, Jerry D.; Buffa, Anthony J.; Lou, Bo

Published by Pearson

ISBN 10: 0-32160-183-1

ISBN 13: 978-0-32160-183-4

Chapter 7 - Circular Motion and Gravitation - Learning Path Questions and Exercises - Exercises - Page 261: 14

Answer

$28.3m$

Work Step by Step

The ice skater spins through 7.5 revolutions. Her arms are 60cm=0.6m long. Hence, the distance covered by tips of fingers $=7.5\times2pi\times0.6=28.3m$

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