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Authors:
Fred L. Mannering, Scott S. Washburn
Chapter:
Road Vehicle Performance
Exercise:
Problems
Question:7 | ISBN:9781118120149 | Edition: 5

Question

A 3400-lb car is traveling in third gear (overall gear reduction ratio of 2.5 to 1) on a level road at its top speed of 130 mi/h. The air density is 0.00206 slugs/ft3.The car has a frontal area of 19.8 ft2, a drag coefficient of 0.28, a wheel radius of 12.6 inches, a drive axle slippage of 3%, and a drivetrain efficiency of 88%. At this vehicle speed, what torque is the engine producing and what is the engine speed (in revolutions per minute)?

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