Essential University Physics (3rd Edition)
3rd Edition
ISBN: 9780134202709
Author: Richard Wolfson
Publisher: PEARSON
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Textbook Question
Chapter 5, Problem 80PP
A spiral is an ice-skating position in which the skater glides on one foot with the other foot held above hip level. It’s a required element in women’s singles figure skating competition and is related to the arabesque performed in ballet. Figure 5.40 shows skater Sarah Hughes executing a spiral during her gold-medal performance at the Winter Olympics in Salt Lake City.
FIGURE 5.40 Problem 77-80
The till angle θ that the skater’s body makes with the vertical is given approximately by θ = tan−1(0.5). From this you can conclude that the skater’s centripetal acceleration has approximate magnitude
- a. 0.
- b. 0.5 m/s2.
- c. 5 m/s2.
- d. can’t be determined without knowing the skater’s speed
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Chapter 5 Solutions
Essential University Physics (3rd Edition)
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