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W Hat Is a uISk S Inequency iH FeV/s? 18. The horse on a carousel is 4.1 m from the central axis. If the carousel rotates at 0.14 rev/s, how long does it take the horse to go around twice? How fast is a child on the horse going (in m/s)?

W Hat Is a uISk S Inequency iH FeV/s? 18. The horse on a carousel is 4.1 m from the central axis. If the carousel rotates at 0.14 rev/s, how long does it take the horse to go around twice? How fast is a child on the horse going (in m/s)?

Physics for Scientists and Engineers: Foundations and Connections
Physics for Scientists and Engineers: Foundations and Connections
1st Edition
ISBN:9781133939146
Author:Katz, Debora M.
Publisher:Katz, Debora M.
Chapter12: Rotation I: Kinematics And Dynamics
Section: Chapter Questions
Problem 62PQ: Problems 62 and 63 are paired. 62. C A disk is rotating around a fixed axis that passes through its...
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Question 18
What is a disk's frequency in rev/s? 18. The horse on a carousel is 4.1 m from the central axis. If the carousel rotates at 0.14 rev/s, how long does it take the horse to go around twice? How fast is a child on the horse going (in m/s)? 19. The radius of the earth's very nearly circular orbit around the sun is 1.50x10m. Find the magnitude of the earth's velocity as it travels around the sun. Assume a year of 365 days. Find the magnitude of the earth's centripetal acceleration as it travels around the sun. Assume a year of 365 days. 20. Modern wind turbines are larger than they appear, and despite their apparently lazy motion, the speed of the blade's tips can be quite high-many times higher than the wind speed. A turbine has blades 54 m long that spin at 14 At the tip of a blade, what is the speed? osIod odt beuo W At the tip of a blade, what is the centripetal acceleration? rpm. 3. To withstand "g-forces" of up to 10g, caused by suddenly pulling out of a steep dive, fighter jet pilots train on a "human centrifuge." 10g is an acceleration of 98 m/s². If the length of the centrifuge arm is 14 m, at what speed is the rider moving when she experiences 10g
Transcribed Image Text:What is a disk's frequency in rev/s? 18. The horse on a carousel is 4.1 m from the central axis. If the carousel rotates at 0.14 rev/s, how long does it take the horse to go around twice? How fast is a child on the horse going (in m/s)? 19. The radius of the earth's very nearly circular orbit around the sun is 1.50x10m. Find the magnitude of the earth's velocity as it travels around the sun. Assume a year of 365 days. Find the magnitude of the earth's centripetal acceleration as it travels around the sun. Assume a year of 365 days. 20. Modern wind turbines are larger than they appear, and despite their apparently lazy motion, the speed of the blade's tips can be quite high-many times higher than the wind speed. A turbine has blades 54 m long that spin at 14 At the tip of a blade, what is the speed? osIod odt beuo W At the tip of a blade, what is the centripetal acceleration? rpm. 3. To withstand "g-forces" of up to 10g, caused by suddenly pulling out of a steep dive, fighter jet pilots train on a "human centrifuge." 10g is an acceleration of 98 m/s². If the length of the centrifuge arm is 14 m, at what speed is the rider moving when she experiences 10g
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