College Physics
1st Edition
ISBN: 9781938168000
Author: Paul Peter Urone, Roger Hinrichs
Publisher: OpenStax College
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Chapter 6, Problem 11PE
A runner taking part in the 200 m dash must run around the end of a track that has a circular arc with a radius of curvature of 30 m. If he completes the 200 m dash in 23.2 s and runs at constant speed throughout the race, what is the magnitude of his centripetal acceleration as he runs the curved portion of the track?
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A runner taking part in the 200 m dash must run around the end of a track that has a circular arc with a radius of curvature of 35 m. If he completes the 200 m dash in 24.2 s and runs at constant speed throughout the race, what is the magnitude of his centripetal acceleration (in m/s2) as he runs the curved portion of the track?
A runner taking part in the 200 m dash must run around the end of a track that has a circular arc with a radius of curvature of 35 m. The runner starts the race at a constant speed. If she completes the 200 m dash in 22.6 s and runs at constant speed throughout the race, what is the magnitude of her centripetal acceleration (in m/s2) as she runs the curved portion of the track?
A runner taking part in the 200-m dash must run around the end of a track that has a circular arc with a radius of curvature of 30.0 m. The runner starts the race at a constant speed. If she completes the 200-m dash in 23.2 s and runs at constant speed throughout the race, what is her centripetal acceleration as she runs the curved portion of the track?
Chapter 6 Solutions
College Physics
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- An aircraft performs a maneuver called an "aileron". During this maneuver, the plane turns like a screw as it maintains a straight flight path, which sets the wings in circular motion. It takes it 6.4s to complete the circle and the wingspan of the plane is 9.3m. What is the centripetal acceleration of the wing tip?arrow_forwardA runner taking part in the 200 m dash must run around the end of a track that has a circular arc with a radius of curvature of 40 m. The runner starts the race at a constant speed. If she completes the 200 m dash in 22.2 s and runs at constant speed throughout the race, what is the magnitude of her centripetal acceleration (in m/s2) as she runs the curved portion of the track? m/s?arrow_forwardA runner taking part in the 200 m dash must run around the end of a track that has a circular arc with a radius of curvature of 35 m. r = 35 mt = 23.3 s If he completes the 200 m dash in 23.3 s and runs at constant speed throughout the race, what is his centripetal acceleration as he runs the curved portion of the track in m/s2? ac =arrow_forward
- Yesua takes part in a 400-m dash where he must run around the end of a track that has a circular arc with a radius of curvature of 60.0 m. Yesua starts the race at a constant speed. (a) If he completes the 400-m dash in 47.3 s and maintains constant speed for the entire race, what is his centripetal acceleration as he runs the curved portion of the track? (b) If his acceleration as he runs around the circular end of the track is given by 2.18 m/s2, how long (in seconds) will it take him to complete the 400-m dash? (c) Yesua partakes in another race where the track is circular with a circumference of 250 m, find the time needed for him to make one revolution given that he accelerates at 1.89 m/s2.arrow_forwardA boy whirls a stone in a horizontal circle of radius 1.5 m and at height 2.0 m above level ground. The string breaks, and the stone flies off horizontally and strikes the ground after traveling a horizontal distance of 10 m.What is the magnitude of the centripetal acceleration of the stone during the circular motion?arrow_forwardYou're designing a highway so that the maximum centripetal acceleration on a curve is no more than 1.1 m/s2 . What is the minimum curvature radius to accommodate a 100 km/h maximum speed? Express your answer to two significant figures and include the appropriate units.arrow_forward
- The blade of a modern wind turbine is usually around 55 m long (radius = 27.5 m). If the blade rotate at 11.29 revolutions per minute, what is the approximate centripetal acceleration (in meters per second squared) at the edge of the blade?arrow_forwardA curve on a highway has a radius of curvature of 200.0 m. What is the magnitude of a car’s centripetal acceleration as it travels along this curve at a constant speed of 26.8 m/s in 4.00 s?arrow_forwardA car is traveling at 0.089 km/s enters a circular track with radius of curvature of 2000 cm. (a) What is the car's centripetal acceleration? (b) How long does it take for the car to finish one complete trip around the circular track?arrow_forward
- A motorcycle, starting from rest, accelerates at 2.87 m/s2 on a circular track with a 205 m diameter. What is the elapsed time, in seconds, at which the centripetal acceleration of the motorcycle has the same magnitude as its tangential acceleration?arrow_forwardAt a distance of 25 km from the eye of a hurricane, the wind is moving at 180 km/h in a circle. What is the magnitude of the centripetal acceleration, in metres per second squared, of the particles that make up the wind?arrow_forwardThe cars on an amusement park ride travel at a constant velocity of 4 m/a on a horizontal circular track that has a radius of 4 m. What is the magnitude of each car’s centripetal acceleration?arrow_forward
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