Problem
A wheel tractor-scraper is operating on a level grade. Assume no power denting is required for equipment condition, altitude, and temperature.
a. Disregarding traction limitations, what is the maximum value of rolling resistance (in lb per ton) over which the fully loaded unit can maintain a speed of 20 mph?
b. What minimum value of coefficient of traction between the tractor wheels and the traveling surface is needed to satisfy the requirements of part a? For the fully loaded condition, 67% of the weight is distributed to the drive axle. Operating weight of the empty scraper is 70,000 lb.
The response should include a reference list. Double-space, using Times New Roman 12 pnt font, one-inch margins, and APA style of writing and citations.