A truck has a drag coefficient based on frontal area of CD = 0:86. The truck has a mass of 12,750 kg and a frontal area of 10.5 m2. If the truck is traveling at constant speed on a level road, the forces retarding its forward progress are the drag and the rolling friction. The force due to rolling friction can be written asFrf = W*fr(1 + V/V0)where V is the truck speed in m/s, V0 = 30 m/s and fr (the coe¢ cient of rolling resistance) is approximately 0.008 for a truck on concrete or asphalt. Plot the total power the engine must supply as a function of truck speed, V . Comment on the relative importance of drag and rolling friction in the fuel consumption of the truck. A truck has a drag coefficient based on frontal area of Cp=0.86. The truck has a mass of 12,750 kg anda frontal area of 10.5 m². If the truck is traveling at constant speed on a level road, the forces retarding itsforward progress are the drag and the rolling friction. The force due to rolling friction can be written asF-Wf.(1+where V is the track speed in m/s, V-30 m/s and f, (the coefficient of rolling resistance) is approximately0.008 for a truck on concrete or asphalt. Plot the total power the engine must supply as a function of truckspeed, V. Comment on the relative importance of drag and rolling friction in the fuel consumption of thetruck.

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Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

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A truck has a drag coefficient based on frontal area of CD = 0:86. The truck has a mass of 12,750 kg and a frontal area of 10.5 m2. If the truck is traveling at constant speed on a level road, the forces retarding its forward progress are the drag and the rolling friction. The force due to rolling friction can be written as
Frf = W*fr(1 + V/V0)
where V is the truck speed in m/s, V0 = 30 m/s and fr (the coe¢ cient of rolling resistance) is approximately 0.008 for a truck on concrete or asphalt. Plot the total power the engine must supply as a function of truck speed, V . Comment on the relative importance of drag and rolling friction in the fuel consumption of the truck.

A truck has a drag coefficient based on frontal area of Cp=0.86. The truck has a mass of 12,750 kg and
a frontal area of 10.5 m². If the truck is traveling at constant speed on a level road, the forces retarding its
forward progress are the drag and the rolling friction. The force due to rolling friction can be written as
F-Wf.(1+
where V is the track speed in m/s, V-30 m/s and f, (the coefficient of rolling resistance) is approximately
0.008 for a truck on concrete or asphalt. Plot the total power the engine must supply as a function of truck
speed, V. Comment on the relative importance of drag and rolling friction in the fuel consumption of the
truck.

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