Answered: Built in 1983 in preparation for the…

Principles of Physics: A Calculus-Based Text

5th Edition

ISBN:9781133104261

Author:Raymond A. Serway, John W. Jewett

Publisher:Raymond A. Serway, John W. Jewett

Chapter5: More Applications Of Newton’s Laws

Section: Chapter Questions

Problem 7OQ: A door in a hospital has a pneumatic closer that pulls the door shut such that the doorknob moves...

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Built in 1983 in preparation for the 1984 Olympic Games, the 7-Eleven United States Olympic Training Center Velodrome features a 333.3-meter cement cycling track with semi-circular turns of radius 22m banked at 33 degrees. (HCPCRN31382)In 2016, Evelyn Stevens set a world record there going 47.98km in one hour. Assuming she traveled at a constant speed for the entire hour, was friction required for her to safely travel the turns on the track? If so, what minimum coefficient of static friction must be present? The mass of Evelyn and her bicycle combined was 62.8 kg.

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Step 1

The given values are,

$r = 22 m θ = 33 ° v = 47.98 k m / h = 47.98 k m / h (\frac{1000 m}{1 k m}) (\frac{1 h}{3600 s}) = 13.32778 m / s m = 62.8 k g$

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