EBK FLUID MECHANICS
2nd Edition
ISBN: 8220106714287
Author: HIBBELER
Publisher: PEARSON
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Chapter 6, Problem 74P
To determine
The average velocity of air flowing, and the pressure difference just in front and just behind blades.
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Assume that the couple shown acts in a vertical plane. Take M = 25 kip.in.
r = 0.75 in.
A
B
4.8 in.
M
1.2 in.
[1.2 in.
Determine the stress at point B.
The stress at point B is
ksi.
Chapter 6 Solutions
EBK FLUID MECHANICS
Ch. 6 - Prob. 1FPCh. 6 - The shield of negligible weight is held at an...Ch. 6 - Prob. 3FPCh. 6 - Crude oil flows into the open air at the same rate...Ch. 6 - The table fan develops a slipstream that has a...Ch. 6 - Prob. 6FPCh. 6 - Determine the linear momentum of a mass of fluid...Ch. 6 - Prob. 2PCh. 6 - A volumetric discharge of 1.25 m3/s passes out the...Ch. 6 - Water flows with a velocity of 6 m/s through the...
Ch. 6 - Water is ejected from the hose at A with a...Ch. 6 - Water flows out of the reducing elbow at 0.6...Ch. 6 - Oil flows through the 100-mm-diameter pipe with a...Ch. 6 - Prob. 8PCh. 6 - Prob. 9PCh. 6 - Water flows through the elbow with a velocity of...Ch. 6 - Prob. 11PCh. 6 - The water jet is ejected from the 4-in.-diameter...Ch. 6 - The water jet is ejected from the 4-in.-diameter...Ch. 6 - Water flows through the elbow at 8 ft/s. Assuming...Ch. 6 - The steady jet of water flows from the...Ch. 6 - The steady jet of water flows from the...Ch. 6 - Crude oil flows through the horizontal tapered 45°...Ch. 6 - A speedboat is powered by the jet drive shown....Ch. 6 - The 160-lb man stands on the scale. If the bucket...Ch. 6 - Prob. 20PCh. 6 - Prob. 21PCh. 6 - Water flows out of the reducing elbow at 0.4...Ch. 6 - Water flows through the 2-in.-diameter pipe...Ch. 6 - The pipe AB has a diameter of 40 mm. If water...Ch. 6 - Prob. 25PCh. 6 - Prob. 26PCh. 6 - Pipe AB has a diameter of 40 mm. If water flows...Ch. 6 - Pipe AB has a diameter of 40 mm. If the tensile...Ch. 6 - The disk valve is used to control the flow of...Ch. 6 - Prob. 30PCh. 6 - Prob. 31PCh. 6 - Prob. 32PCh. 6 - Water flows through the pipe C at 4 m/s. Determine...Ch. 6 - Prob. 34PCh. 6 - The 1-in.-diameter pipe ejects water towards the...Ch. 6 - Prob. 36PCh. 6 - Water flows through the hose with a velocity of 3...Ch. 6 - Water flows through the hose with a velocity of 3...Ch. 6 - A 20-mm-diameter stream flows at 8 m/s against the...Ch. 6 - Determine the power required to keep the vane...Ch. 6 - Prob. 41PCh. 6 - The boat is powered by the fan, which develops a...Ch. 6 - The vane is moving at 80 ft/s when a jet of water...Ch. 6 - The car is used to scoop up water that is in a...Ch. 6 - The water stream strikes the inclined surface of...Ch. 6 - Prob. 46PCh. 6 - Prob. 47PCh. 6 - A 25-mm-diameter stream flows at 10 m/s against...Ch. 6 - Prob. 49PCh. 6 - Water flows into the bend fitting with a velocity...Ch. 6 - Prob. 51PCh. 6 - Water flows into the Tee fitting at 3.6 m/s. If a...Ch. 6 - Prob. 53PCh. 6 - Prob. 54PCh. 6 - If the velocity through the pipe is 4 m/s,...Ch. 6 - Water flows through the 200-mm-diameter pipe bend...Ch. 6 - Water flows through the pipe with a velocity of 5...Ch. 6 - The bend is connected to the pipe at flanges A and...Ch. 6 - The fan blows air at 6000 ft3/min. If the fan has...Ch. 6 - Prob. 60PCh. 6 - Prob. 61PCh. 6 - Prob. 62PCh. 6 - The lawn sprinkler consists of four arms that...Ch. 6 - Prob. 64PCh. 6 - Prob. 65PCh. 6 - Prob. 66PCh. 6 - Prob. 67PCh. 6 - Prob. 68PCh. 6 - The propeller of a boat discharges 67.5 ft3/s of...Ch. 6 - Determine the largest speed of the breeze that can...Ch. 6 - Prob. 71PCh. 6 - Prob. 72PCh. 6 - Prob. 73PCh. 6 - Prob. 74PCh. 6 - Prob. 75PCh. 6 - Prob. 76PCh. 6 - Prob. 77PCh. 6 - Prob. 78PCh. 6 - Prob. 79PCh. 6 - The jet is traveling at a velocity of 400 m/s in...Ch. 6 - Prob. 81PCh. 6 - Prob. 82PCh. 6 - Prob. 83PCh. 6 - The jet is traveling at 500 mi/h, 30° above the...Ch. 6 - Prob. 85PCh. 6 - Prob. 86PCh. 6 - The rocket is traveling upwards at 300 m/s and...Ch. 6 - The balloon has a mass of 20 g (empty) and it is...Ch. 6 - Prob. 89PCh. 6 - Prob. 90PCh. 6 - Prob. 91PCh. 6 - Prob. 92P
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- Problem 6 (Optional, extra 6 points) 150 mm 150 mm 120 mm 80 mm 60 mm PROBLEM 18.103 A 2.5 kg homogeneous disk of radius 80 mm rotates with an angular velocity ₁ with respect to arm ABC, which is welded to a shaft DCE rotating as shown at the constant rate w212 rad/s. Friction in the bearing at A causes ₁ to decrease at the rate of 15 rad/s². Determine the dynamic reactions at D and E at a time when ₁ has decreased to 50 rad/s. Answer: 5=-22.01 +26.8} N E=-21.2-5.20Ĵ Narrow_forwardProblem 1. Two uniform rods AB and CE, each of weight 3 lb and length 2 ft, are welded to each other at their midpoints. Knowing that this assembly has an angular velocity of constant magnitude c = 12 rad/s, determine: (1). the magnitude and direction of the angular momentum HD of the assembly about D. (2). the dynamic reactions (ignore mg) at the bearings at A and B. 9 in. 3 in. 03 9 in. 3 in. Answers: HD = 0.162 i +0.184 j slug-ft²/s HG = 2.21 k Ay =-1.1 lb; Az = 0; By = 1.1 lb; B₂ = 0.arrow_forwardProblem 5 (Optional, extra 6 points) A 6-lb homogeneous disk of radius 3 in. spins as shown at the constant rate w₁ = 60 rad/s. The disk is supported by the fork-ended rod AB, which is welded to the vertical shaft CBD. The system is at rest when a couple Mo= (0.25ft-lb)j is applied to the shaft for 2 s and then removed. Determine the dynamic reactions at C and D before and after the couple has been removed at 2 s. 4 in. C B Mo 5 in 4 in. Note: 2 rotating around CD induced by Mo is NOT constant before Mo is removed. and ₂ (two unknowns) are related by the equation: ₂ =0+ w₂t 3 in. Partial Answer (after Mo has been removed): C-7.81+7.43k lb D -7.81 7.43 lbarrow_forward
- Problem 4. A homogeneous disk with radius and mass m is mounted on an axle OG with length L and a negligible mass. The axle is pivoted at the fixed-point O, and the disk is constrained to roll on a horizontal surface. The disk rotates counterclockwise at the constant rate o₁ about the axle. (mg must be included into your calculation) (a). Calculate the linear velocity of G and indicate it on the figure. (b). Calculate ₂ (constant), which is the angular velocity of the axle OG around the vertical axis. (c). Calculate the linear acceleration ā of G and indicate it on the figure. (d). Determine the force (assumed vertical) exerted by the floor on the disk (e). Determine the reaction at the pivot O. 1 Answers: N = mg +mr(r/L)² @² |j mr w IIG C R L i+ 2L =arrow_forwardProblem 2. The homogeneous disk of weight W = 6 lb rotates at the constant rate co₁ = 16 rad/s with respect to arm ABC, which is welded to a shaft DCE rotating at the constant rate 2 = 8 rad/s. Assume the rod weight is negligible compared to the disk. Determine the dynamic reactions at D and E (ignore mg). Answers: D=-7.12ĵ+4.47k lb r-8 in. 9 in. B D E=-1.822+4.47 lb 9 in. E 12 in. 12 in. xarrow_forwardProblem 3. Each of the right angle rods has a mass of 120 g and is welded to the shaft, which rotates at a steady speed of 3600 rpm. Ignore the weight of the shaft AB. Find the bearing dynamic reaction at A due to the dynamic imbalance of the shaft. (ignore mgs) 100 N A 100 100 100 100 100 (Dimensions in millimeters) Answer: A=-8521-426j N Barrow_forward
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