5. A factory worker pushes a 42.5-kg crate a distance of 11.2 meters along a level floor at a constant velocity by pushing on it horizontally. The coefficient of kinetic friction between the crate and the floor is 0.217. a. What magnitude of force must the worker apply? b. How much work is done on the crate by this force? C. How much work is done on the crate by friction? d. How much work is done on the crate by the normal force? By gravity? e. What is the total (net) work done on the crate?
5. A factory worker pushes a 42.5-kg crate a distance of 11.2 meters along a level floor at a constant velocity by pushing on it horizontally. The coefficient of kinetic friction between the crate and the floor is 0.217. a. What magnitude of force must the worker apply? b. How much work is done on the crate by this force? C. How much work is done on the crate by friction? d. How much work is done on the crate by the normal force? By gravity? e. What is the total (net) work done on the crate?
College Physics
1st Edition
ISBN:9781938168000
Author:Paul Peter Urone, Roger Hinrichs
Publisher:Paul Peter Urone, Roger Hinrichs
Chapter7: Work, Energy, And Energy Resources
Section: Chapter Questions
Problem 8PE: Suppose the ski patrol lowers a rescue sled and victim, having a total mass of 90.0 kg, down a 60.0°...
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