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A trailer truck enters a 2 percent downhill grade traveling at 108 km/h and must slow down to 72 km/h in 300 m. The cab has a mass of 1800 kg and the trailer 5400 kg. Determine (a) the aver- age braking force that must be applied, (b) the average force exerted on the coupling between cab and trailer if 70 percent of the braking force is supplied by the trailer and 30 percent by the cab. 108 km/h RAIL INES 300 m 2% down grade 72 k

A trailer truck enters a 2 percent downhill grade traveling at 108 km/h and must slow down to 72 km/h in 300 m. The cab has a mass of 1800 kg and the trailer 5400 kg. Determine (a) the aver- age braking force that must be applied, (b) the average force exerted on the coupling between cab and trailer if 70 percent of the braking force is supplied by the trailer and 30 percent by the cab. 108 km/h RAIL INES 300 m 2% down grade 72 k

College Physics
College Physics
11th Edition
ISBN:9781305952300
Author:Raymond A. Serway, Chris Vuille
Publisher:Raymond A. Serway, Chris Vuille
Chapter1: Units, Trigonometry. And Vectors
Section: Chapter Questions
Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...
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Solve the following problem (NOTE: Use any reasonable DATA not given in the problem.)
PROBLEM 5: A trailer truck enters a 2 percent downhill grade traveling at 108 km/h and must slow down to 72 km/h in 300 m. The cab has a mass of 1800 kg and the trailer 5400 kg. Determine (a) the aver- age braking force that must be applied, (b) the average force exerted on the coupling between cab and trailer if 70 percent of the braking force is supplied by the trailer and 30 percent by the cab. 108 km/h RAIL INES 300 m 2% down grade 72 km/h
Transcribed Image Text:PROBLEM 5: A trailer truck enters a 2 percent downhill grade traveling at 108 km/h and must slow down to 72 km/h in 300 m. The cab has a mass of 1800 kg and the trailer 5400 kg. Determine (a) the aver- age braking force that must be applied, (b) the average force exerted on the coupling between cab and trailer if 70 percent of the braking force is supplied by the trailer and 30 percent by the cab. 108 km/h RAIL INES 300 m 2% down grade 72 km/h
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