Question: A CAT 6 3 1 G single engine scraper is being used to excavate and haul an earth - rock mixture up a 7 %

A CAT 631G single engine scraper is being used to excavate and haul an earth-rock mixture up a 7% grade. During the haul it is observed that the tire penetration is 3 inches. Compute the rolling resistance and grade resistance for the scraper in effective grade % and in pounds. The empty weight of the scraper is 105,002lbs and the rated load is 81,600lbs. Assume that weight governs for the heaped condition.
A CAT 6 3 1 G single engine scraper is being used

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