Physics for Scientists and Engineers: Foundations and Connections
1st Edition
ISBN: 9781133939146
Author: Katz, Debora M.
Publisher: Cengage Learning
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Chapter 14, Problem 25PQ
A painter of mass 87.8 kg is 1.45 m from the top of a 6.67-m ladder. The ladder rests against a wall. Friction between the ladder and the wall is negligible. The ladder’s mass is 5.50 kg. Assume the ladder is set up according to Occupational Safety and Health Administration standards so that it makes a 75.5° angle with the floor.
a. What is the minimum coefficient of static friction required for the painter’s safety?
b. Would rubber ladder tips on dry concrete be safe?
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Chapter 14 Solutions
Physics for Scientists and Engineers: Foundations and Connections
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