Physics, 01.10.2019 00:30 johnmarston60
A3200 lb vehicle is being designed with a drag coefficient of 0.35 and a frontal area of 50 ft2. if the vehicle is traveling at 70 miles per hour on a downhill grade of 2% at an air density of 0.002378 slugs/ft3, what tractive effort is required to overcome the vehicle resistance forces (in lb)?
Answers: 1
=Rolling resistance coefficient![F_{rl}=0.01\left [ 1+\frac{v}{160}\right ]](/tpl/images/0278/0685/4824a.png)
![F_{rl}=0.01\left [ 1+\frac{112.65}{160}\right ]](/tpl/images/0278/0685/36f63.png)
(beacuse of downward slope)
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A3200 lb vehicle is being designed with a drag coefficient of 0.35 and a frontal area of 50 ft2. if...
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