Attached is my solution to part A and B (100% sure they\'re correct) I only need
ID: 1711705 • Letter: A
Question
Attached is my solution to part A and B (100% sure they're correct) I only need help with part C please! a. A CAT 834 power-shift dozer is used in a pushing operation. The dozer is equipped with a straight blade. S blade The material non-cohesive, dry silty sand weighs 108 pcf in the bank state. It is estimated that the material will swell 10% from bank to loose state. The center-of- mass-t enter-of-mass pushing is 350 ft on a-10% grade The operators have average skill the job will be performed in conditions Job efficiency can be assumed to be equivalent to a 50 -min hour. Calculate the direct cost of the proposed earthmoving operation in dollars per bcy. The company's normal O&O; cost for these machines is $69.95 per hour and the operator's wage is 10.85 per hour plus 36.0% for fringes, insurance, worker's compensation, and so on Assume that the dozer will have a coefficient of traction. b. Unit production cost c. It rains and the coefficient of traction for the 824 is now 0.37. The coefficient of traction for the D7 is 0.55. Which machine would you use on this jobExplanation / Answer
traction = coefficient of traction x normal force
according to this higher the coefficient of traction higher the friction between the two surface( ex tire, road).
so better to use higher value of coefficent of traction, that is 0.55 of D7
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