ENGINEERING FUNDAMENTALS
6th Edition
ISBN: 9781337705011
Author: MOAVENI
Publisher: CENGAGE L
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Question
Chapter 14, Problem 11P
To determine
Determine the power requirement to overcome air resistance for a car.
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Students have asked these similar questions
The air resistance to the motion of a vehicle
is something important that engineers
investigate. As you may also know, the
drag force acting on a car is determined
experimentally by placing the car in a wind
tunnel. For a given car, the experimental
data is generally represented by a single
coefficient that is called the drag coefficient.
It is given by the relationship:
Fa
C, =
where
C, = drag coefficient
F, = measured drag force (Ib)
p = air density (slugs/ft')
V = air speed inside the wind tunnel (ft/s)
A = frontal area of the car (ft²)
What is the appropriate unit for C, if the
preceding equation is to be homogeneous in
units? Show all steps of your work.
The air resistance to the motion of a vehicle is something important that engineers investigate. As you may also know, the drag force acting on a car is determined experiementally by placing the car in a wind tunnel. For a given car, the experimental data is generally represented by a single coefficient that is called the drag coefficient. It is given by the relationship
C(4)=F(d)/ 1/2 pV^2 (A)
C(d)= drag coefficient
F(d)= measured drag force (lb)
p= air density (slugs/ft^3)
V= air speed inside the wind tunnel (ft/s)
A=frontal area of the car (ft^2)
What is the appropiate unit for C, if the proceeding equation is to be homogeneous in units? show all steps of your work
DYNAMICS OF RIGID BODIES
Two masses of 14 kg and 7 kg connected
by a flexible inextensible cord rest on a
smooth plane inclined 45° with the
horizontal as shown in the figure. When
the masses are released, what will be the
tension T in the cord? Assume the
coefficient of friction between the plane
and the 14-kg mass is 1/4 and between
the plane and the 7-kg mass is 3/8?
7 kg
14 kg
450
Chapter 14 Solutions
ENGINEERING FUNDAMENTALS
Ch. 14.2 - Prob. 1BYGCh. 14.2 - Prob. 2BYGCh. 14.2 - Prob. 3BYGCh. 14.2 - Prob. 4BYGCh. 14.2 - Prob. 5BYGCh. 14.2 - Prob. BYGVCh. 14.4 - Prob. 1BYGCh. 14.4 - Prob. 2BYGCh. 14.4 - Prob. 3BYGCh. 14.4 - Prob. 4BYG
Ch. 14.4 - Prob. 5BYGCh. 14.4 - Prob. BYGVCh. 14.5 - Prob. 1BYGCh. 14.5 - Prob. 2BYGCh. 14.5 - Prob. 3BYGCh. 14.5 - Prob. 4BYGCh. 14.5 - Prob. BYGVCh. 14 - Prob. 1PCh. 14 - Prob. 2PCh. 14 - Prob. 3PCh. 14 - Prob. 4PCh. 14 - Prob. 5PCh. 14 - Prob. 6PCh. 14 - Prob. 7PCh. 14 - Using Excel, create a table that shows the...Ch. 14 - Using Excel, create a table that shows the...Ch. 14 - Prob. 10PCh. 14 - Prob. 11PCh. 14 - Prob. 12PCh. 14 - Prob. 13PCh. 14 - Prob. 14PCh. 14 - Prob. 15PCh. 14 - Prob. 16PCh. 14 - Prob. 17PCh. 14 - Prob. 18PCh. 14 - Prob. 19PCh. 14 - Prob. 20PCh. 14 - Prob. 21PCh. 14 - Prob. 22PCh. 14 - Prob. 23PCh. 14 - Prob. 24PCh. 14 - Prob. 25PCh. 14 - Prob. 26PCh. 14 - Prob. 27PCh. 14 - Prob. 28PCh. 14 - Prob. 29PCh. 14 - Prob. 30PCh. 14 - Prob. 31PCh. 14 - Prob. 32PCh. 14 - Prob. 33PCh. 14 - Prob. 34PCh. 14 - Prob. 35P
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