ENGINEERING FUNDAMENTALS
6th Edition
ISBN: 9781337705011
Author: MOAVENI
Publisher: CENGAGE L
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Chapter 18, Problem 6P
To determine
Plot the power requirement, the rate of change of power requirement as a function of speed.
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Students have asked these similar questions
3. Determine drag on the sphere for flow past a sphere (see the figure below) using these
parameters D (diameter of sphere), p (density), u (viscosity), u (velocity), Fo (Drag on
the sphere).
Example:
u = xt+ 2y
v = xt'-yt
w = 0
Given:
What is the acceleration at a point x-1 m, y=2 m,
and at a time t=3 s?
The head loss due to flow of a fluid inside a
pipe is calculated from
.L V?
D 2g
h Loss
where
Loss
f = friction factor
L = pipe length (m)
D = pipe diameter (m)
V = average flow velocity (m/s)
g = acceleration due to gravity (m/s²)
What is the appropriate unit for friction
factor f?
Chapter 18 Solutions
ENGINEERING FUNDAMENTALS
Ch. 18.2 - Prob. 1BYGCh. 18.2 - Prob. 2BYGCh. 18.2 - Prob. 3BYGCh. 18.2 - Prob. 4BYGCh. 18.2 - Prob. BYGVCh. 18.3 - Prob. 1BYGCh. 18.3 - Prob. 2BYGCh. 18.3 - Prob. 3BYGCh. 18.3 - Prob. BYGVCh. 18.4 - Prob. 1BYG
Ch. 18.4 - Prob. 2BYGCh. 18.4 - Prob. 3BYGCh. 18.4 - Prob. 4BYGCh. 18.4 - Prob. BYGVCh. 18.5 - Prob. 1BYGCh. 18.5 - Prob. 2BYGCh. 18.5 - Prob. 3BYGCh. 18.5 - Prob. 4BYGCh. 18.5 - Prob. BYGVCh. 18.6 - Prob. 1BYGCh. 18.6 - Prob. 2BYGCh. 18.6 - Prob. 3BYGCh. 18.6 - Prob. 4BYGCh. 18.6 - Prob. BYGVCh. 18.7 - Prob. 1BYGCh. 18.7 - Prob. 2BYGCh. 18.7 - Prob. BYGVCh. 18 - Prob. 1PCh. 18 - Prob. 2PCh. 18 - Prob. 3PCh. 18 - In Chapter 12, we explained that the electric...Ch. 18 - The deflection of a cantilevered beam supporting...Ch. 18 - Prob. 6PCh. 18 - Prob. 7PCh. 18 - Prob. 8PCh. 18 - Prob. 9PCh. 18 - Prob. 10PCh. 18 - Prob. 11PCh. 18 - Prob. 12PCh. 18 - Prob. 13PCh. 18 - Prob. 14PCh. 18 - A jet plane taking off creates a noise with a...Ch. 18 - Prob. 16PCh. 18 - Prob. 17PCh. 18 - Prob. 18PCh. 18 - Prob. 19PCh. 18 - Prob. 20PCh. 18 - Prob. 21PCh. 18 - Prob. 22PCh. 18 - Prob. 23PCh. 18 - Prob. 24PCh. 18 - Prob. 25PCh. 18 - Prob. 26PCh. 18 - Prob. 27PCh. 18 - Prob. 28PCh. 18 - Prob. 29PCh. 18 - Prob. 30PCh. 18 - Prob. 31PCh. 18 - Prob. 32PCh. 18 - Prob. 33PCh. 18 - Prob. 34PCh. 18 - Prob. 35PCh. 18 - Prob. 36PCh. 18 - Prob. 37PCh. 18 - Prob. 38PCh. 18 - Prob. 39PCh. 18 - Prob. 40PCh. 18 - Prob. 41PCh. 18 - Prob. 42PCh. 18 - Prob. 43PCh. 18 - Prob. 44PCh. 18 - Prob. 45P
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- 3. The drag force of an object moving through a fluid is found to be FD = CpAv² where Cis the drag coefficient, A is the area of the object facing the fluid, and p is the density of the fluid. The drag coefficient is determined experimentally. Using this form of the drag force, calculate the terminal velocity of a 75 kg skydiver in 2 positions: diving head first like an arrow (C=0.70, A=0.18 m²) and laying horizontal (C=1.0, A=2 m²). The density of air is p = 1.21 kg/m³.arrow_forwardA pole is at an angle with a force F applied at a different angle at the end (as shown in figure with parameters defined in table). What are the magnitudes of the components of the force parallel and perpendicular to the pole? z F NG SA 2021 Cathy Zupke parameter value units F 400 lb 4 ft L2 La 2 ft ft 40 55 The magnitude of the component of F parallel to pole= lb. The magnitude of the component of F perpendicular to pole= = lb.arrow_forwardCalculate the r- and θ-components of acceleration.Answers: ar = m/s2 aθ = m/s2arrow_forward
- c) The drag force FD on a cylinder of diameter d and length l is to be studied. What functional form relates the dimensionless variables if a fluid with velocity V flows normal to the cylinder?arrow_forwardA cylindrical container whose weight is litet Ibf is inverted and pressed into the water, as shown in the given figure. Determine the differential height h of the manometer and the force F needed to hold the container at the position shown. (specific weight of water is 62.22 lbf/ft³). 21.55 Manometer Air fluid S.G. = 2.1 d= 9.84 in 7.87 in -hwter Water W = Far %3Darrow_forwardIn order to transfer two rectangular packages as shown in the figure below, an 8-kg steel wagon is used along a smooth floor. The masses of Packages 1 and 2 are mp₁ = 25 kg and mp2 = 20 kg, respectively. The coefficients of static friction and kinetic friction between Package 1 and Package 2 are μ = 0.3 and μ = 0.2, respectively. The coefficients of static friction and kinetic friction between Package 2 and the wagon are μ = 0.40 and μ = 0.25, respectively. If a pulling force of F = 15 N is applied on the steel wagon handle as shown, determine if Package 1 will slip before it will tip. Explain your answer. Take note that Package 2 will slip before it will tip. 350 mm 1 600 mm 650 mm 2 750 mmarrow_forward
- The block weighing 1 kN is subjected to the forces as shown. Assuming the block starts at rest, calculate the distance it will travel in meters so that it will have a speed of 6 m/s . Coefficient of kinetic friction between the block and the surface is 0.2 and the air resistance (as a function of displacement) is assumed to act horizontally with a magnitude of 150s Newtons, where s is the displacement from the starting position. Answer in 2 decimal places.arrow_forward6. a. Explain (include diagrams) the following components of Total drag on a solid object placed in a moving fluid. Include in your discussion how these components vary as the orientation of the object changes in the flow field: i) Pressure Drag ii) Friction Drag b. An antenna in the shape of a cylindrical rod projects from the top of an automobile. If the antenna is 106 cm long and 50 mm in diameter, calculate the drag force on it when the automobile is travelling at a velocity of 7.5 m/s in still air at -20°C Assume the surface of the structure is smooth. Page 4 of 8 D = 2 Copv²A %3Darrow_forwardr h F y cC BY UBC Engineering Movers are trying to set up an art gallery. They attempt to drag a human-size statue of a soda can with 110 kg by tying a rope around it. Determine if the movers can drag the statue along the floor 0.41 and mass m = without it tipping if the coefficients of static friction and kinetic friction are found to be us = 0.3, respectively. What is the maximum force the movers can apply without tipping the statue? The 1.5 m and the rope is tied 1 m off the ground. Assume the statue to be a solid can has a height of h cylinder with radius r = 0.25 m and constant density. Can the statue be dragged without tipping? No Yes Frip N If the movers can apply the force required for the statue to slip, where is the maximum height they should tie the rope to safely drag the statue? y = marrow_forward
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