A new pizza store needs a delivery car with a sign attached. The sign is 1.5 ft high and 5 ft long. The boss wants to mo

[answerhappygod]

A new pizza store needs a delivery car with a sign attached. The sign is 1.5 ft high and 5 ft long. The boss wants to mount the sign normal to the car’s motion. His employee, a student of fluid mechanics, suggests mounting it parallel to the motion. (a) Calculate the drag on the sign alone at 40 mi/h (58.7 ft/s) in both orientations. (b) The car has a rolling resistance of 40 lbf, a drag coefficient of 0.4, and a frontal area of 40 ft2. Calculate the total drag of the car-sign combination at 40 mi/h. (c) Include rolling resistance and calculate the horsepower required in both orientations. (d) If the engine delivers 10 hp for 1 hour on a gallon of gasoline, calculate the fuel efficiency in mi/gal in both orientations, at 40 mi/h.
Using EES (engineering equations solver)
please post

A New Pizza Store Needs A Delivery Car With A Sign Attached The Sign Is 1 5 Ft High And 5 Ft Long The Boss Wants To Mo 1 (22.42 KiB) Viewed 19 times

PIZZA PIZZA