Answered: 1. An Eskimo returning from a…

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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1. An Eskimo returning from a successful fishing trip pulls a sled loaded with salmon. The total mass of the sled and salmon is 50.0 kg, and the Eskimo exerts a force of magnitude 1.20 x102 N on the sled by pulling on the rope. a. How much work does he do on the sled if the rope is horizontal to the ground (θ = 0°) and he pulls the sled in 5.0 m? b. How much work does he do on the sled if (θ =90°) and he pulls the sled the same distance? c. At a coordinate position of 12.4 m, the Eskimo lets up on the applied force. A friction force of 45.0 N between the ice and sled brings the sled to rest at a coordinate position of 18.2 m. How much work does friction do on the sled?

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