A 50000-kg freight car is pulled 800 m up along a 1.20 percent grade at constant speed. (a) Find the work done against gravity by the drawbar pull. (b) If the friction force retarding the motion is 1500 N, find the total work done. Ans. (a) 4.70 MJ; (b) 5.90 MJ Provide given, required, and solution and explanation per part
A 50000-kg freight car is pulled 800 m up along a 1.20 percent grade at constant speed. (a) Find the work done against gravity by the drawbar pull. (b) If the friction force retarding the motion is 1500 N, find the total work done. Ans. (a) 4.70 MJ; (b) 5.90 MJ Provide given, required, and solution and explanation per part
Physics for Scientists and Engineers: Foundations and Connections
1st Edition
ISBN:9781133939146
Author:Katz, Debora M.
Publisher:Katz, Debora M.
Chapter9: Energy In Nonisolated Systems
Section: Chapter Questions
Problem 17PQ
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A 50000-kg freight car is pulled 800 m up along a 1.20 percent grade at constant speed. (a) Find the work done against gravity by the drawbar pull. (b) If the friction force retarding the motion is 1500 N, find the total work done. Ans. (a) 4.70 MJ; (b) 5.90 MJ
Provide given, required, and solution and explanation per part
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