Concept explainers
Questions 25 through 27 concern a classic figure-skating jump called the axel. A skater starts the jump moving forward as shown in Figure Q7.25, leaps into the air, and turns one-and-a-half revolutions before landing. The typical skater is in the air for about 0.5 s, and the skater's hands are located about 0.8 m from the rotation axis.
Figure Q7.25
26. The skater’s arms are fully extended during the jump. What is the approximate centripetal acceleration of the skater’s hand?
A. 10 m/s2
B. 30 m/s2
C. 300 m/s2
D. 450 m/s2
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