PRIN.OF HIGHWAY ENGINEERING&TRAFFIC ANA.
7th Edition
ISBN: 9781119610526
Author: Mannering
Publisher: WILEY
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Chapter 2, Problem 35P
To determine
The minimum tractive effort required for the vehicle to maintains its given speed.
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A 3500 lb vehicle is being designed with a drag coefficient of 0.4 and a frontal area of 50 ft2. If the vehicle is traveling at 70 miles per hour on a downhill grade of 2% at an air density of 0.002378 slugs/ft³, what tractive effort is required to overcome the vehicle resistance forces (in lb)?
A 2600 lb vehicle has a drag coefficient of 0.35 and a frontal area of 22 ft?. What is the minimum tractive effort required for this vehicle to maintain a 60 mi/hour speed on a 5% upgrade through an air density of 0.002045-slugs/ft?
The 19-Mg truck drives onto the 278-Mg barge from the dock at 25 km/h and brakes to stop on the
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278 Mg
19 Mg
Answer: v =
i
km/h
Chapter 2 Solutions
PRIN.OF HIGHWAY ENGINEERING&TRAFFIC ANA.
Ch. 2 - Prob. 1PCh. 2 - Prob. 2PCh. 2 - Prob. 3PCh. 2 - Prob. 4PCh. 2 - Prob. 5PCh. 2 - Prob. 6PCh. 2 - Prob. 7PCh. 2 - Prob. 8PCh. 2 - Prob. 9PCh. 2 - Prob. 10P
Ch. 2 - Prob. 11PCh. 2 - Prob. 12PCh. 2 - Prob. 13PCh. 2 - Prob. 14PCh. 2 - Prob. 15PCh. 2 - Prob. 16PCh. 2 - Prob. 17PCh. 2 - Prob. 18PCh. 2 - Prob. 19PCh. 2 - Prob. 20PCh. 2 - Prob. 21PCh. 2 - Prob. 22PCh. 2 - Prob. 23PCh. 2 - Prob. 24PCh. 2 - Prob. 25PCh. 2 - Prob. 26PCh. 2 - Prob. 27PCh. 2 - Prob. 28PCh. 2 - Prob. 29PCh. 2 - Prob. 30PCh. 2 - Prob. 31PCh. 2 - Prob. 32PCh. 2 - Prob. 33PCh. 2 - Prob. 34PCh. 2 - Prob. 35PCh. 2 - Prob. 36PCh. 2 - Prob. 37PCh. 2 - Prob. 38PCh. 2 - Prob. 39PCh. 2 - Prob. 40P
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