Applied Fluid Mechanics (7th Edition)
7th Edition
ISBN: 9780132558921
Author: Robert L. Mott, Joseph A. Untener
Publisher: PEARSON
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Chapter 16, Problem 16.10PP
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4.118
A vertical jet of water impinges on a horizontal disk
as shown. The disk assembly mass is 30 kg. When the disk is
3 m above the nozzle exit, it is moving upward at U = 5 m/s.
Compute the vertical acceleration of the disk at this instant.
U = 5 m/s
-M = 30 kg
(2)
CS moving
at speed U
h = 3 m
-A = 0.005 m2
V = 15 m/s
75
2.14 A 4-in.-dia. stream of water strikes the conical deflector as shown.
Determine the flow rate from the stationary jet if a 10-lb force is measured on
(a) a stationary deflector and (b) a deflector moving to the right at 20 fps.
A horizontal rectangular outlet downstream of a dam, 2-5 m high and
1-5 m wide discharges 70 m'/s of water on to a concave concrete floor of
12 m radius and 6 m long. deflecting the water away from the outlet to
dissipate energy. Calculate the resultant thrust the fluid exerts on the floor
Chapter 16 Solutions
Applied Fluid Mechanics (7th Edition)
Ch. 16 - Calculate the force required to hold a flat plate...Ch. 16 - What must be the velocity of flow of water from a...Ch. 16 - Calculate the force exerted on a stationary curved...Ch. 16 - A highway sign is being designed to withstand...Ch. 16 - Compute the forces in the vertical and horizontal...Ch. 16 - Figure 16.13 O shows a free stream of water at 180...Ch. 16 - Compute the horizontal and vertical forces exerted...Ch. 16 - In a plant where hemispherical cup-shaped parts...Ch. 16 - A stream of non-flammable oil (sg 5 0.90) is...Ch. 16 - A 2 -in-diameter stream of water having a velocity...
Ch. 16 - Figure 16.17 O represents a type of flowmeter in...Ch. 16 - Water is piped vertically from below a boat and...Ch. 16 - A 2 -in nozzle is attached to a hose with an...Ch. 16 - Seawater (sg 5 1.03) enters a heat exchanger...Ch. 16 - A reducer connects a standard 6 -in Schedule...Ch. 16 - Calculate the force on a elbow attached to an in...Ch. 16 - Calculate the force required to hold a 90 elbow in...Ch. 16 - Calculate the force required to hold a 180 close...Ch. 16 - A bend in a tube causes the flow to turn through...Ch. 16 - A vehicle is to be propelled by a jet of water...Ch. 16 - A part of an inspection system in a packaging...Ch. 16 - Shown in Fig. 16.20 is a small decorative wheel...Ch. 16 - For the wheel described in Problem 16.22. compute...Ch. 16 - A set of louvers deflects a stream of warm air...Ch. 16 - Prob. 16.25PPCh. 16 - Prob. 16.26PPCh. 16 - Figure 16.22 shows a device for clearing debris...Ch. 16 - Prob. 16.28PPCh. 16 - Figure 16.23 is a sketch of a turbine in which the...Ch. 16 - Repeat Problem 16.29 with the blade rotating as a...Ch. 16 - Repeat Problem 16.29, except with the blade...
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- (Moment-of-momentum) A lawn sprinkler is constructed from pipe with 0.226-in. inside diameter as indicated in the figure below. Each arm is 5.54 in. in length. Water flows through the sprinkler at the rate of 1.45 lb/s. A force of 3.43 lb positioned halfway along one arm holds the sprinkler stationary. Compute the angle, 0, which the exiting water stream makes with the tangential direction. The flow leaves the nozzles in the horizontal plane. -D 11.1 in. 8 A -Nozzle exit diameter = 0.226 in. 2.77 in. 3.43 lb i degarrow_forwardQ.1). The figure below shows a smooth curved vane attached to a rigid foundation. The jet of water, with 49 mm diameter, strike the vane with a velocity of 25m/s. calculate the vertical and horizontal components of the force exerted on the vane and indicate in which direction these components act. 45⁰ 25°arrow_forwardSolve the following problems. 1. A pipe bends through an angle of 90° in the vertical plane. At the inlet it has a cross- sectional area of 0.003 m and a gauge pressure of 500 KPa. At exit it has an area of 0.001 m2 and a gauge pressure of 200 KPa. Calculate the vertical and horizontal forces due to the pressure only. 2. Calculate the momentum force on a 180° bend that carries 5 kg/s of water. The pipe is 500 mm bore diameter throughout. The density is 1000 kg/m2.arrow_forward
- 10. A water jet impacting a conical surface (as shown). Find the force of water on the cone. V 50° C.V.arrow_forwardTwo geometrically similar pumps are running at the same speed of 1000 rpms One pump has impoller diameter of 300 mm and lift water at the rate of 0.02 m3 against a head of 15 m Determine the head and impeller diameter of the other pump to deliver half the discharge.arrow_forwardCalculate the force exerted on a stationary curved vane that deflects a 1-in-diameter stream of water through a 90o angle. The volume flow rate is 150 gal/min. (the density of water is ρ = 1.94 slugs/ft3 or 1.94 lbˑs2/ft4. Also, 1 ft3/s = 449 gal/min)arrow_forward
- Q.1) A ball is shot at high speed into a frictionless channel that is in the shape of a segment of a circle with center at 0.The channel is frictionless and sits on a horizontal table top.The figure shown is the top view. Which of the following force(s) are acting on the ball when it is within the frictionless channel at position B? Explain your answers. Check all that apply. A downward force of gravity. A force pointing from O to B. A force in the direction of motion. A force pointing from B to O. Which path would the ball most closely follow after it exits the channel at C and moves across the frictionless table top? L L Larrow_forwardThe weight of a yacht and its passengers is 11.60 KN. The boat moves in a circular path with a radius of 24 meters with a constant speed of 6 m/s. (A) compute the tangential component of the total force acting on the yacht. (B) What is the magnitude of the force if it's increasing its speed at 2 m/s^2arrow_forward4. A centrifugal pump delivers water to a height of 22 metres at a speed of 800 r.p.m. The velocity of flow is constant at a speed of 2-0 m/s and the outlet vane anglc is 45°. If the pump discharges 225 litres of water per second, find the diameter of the impeller and width of the impcller at oudet. (Ans. 375 mm: 95 mm)arrow_forward
- What is momentum? How its related to Newton's second law of motion? Also explain how to calculate the force acting on a bend by using momentum equation with required equations and diagram.arrow_forwardThe water jet in figure, moving at 15 m/s, is split so that one-third of the water moves towardA. Calculate the magnitude and direction of the force on the stationary splitter.arrow_forwardFind the force required to hold the blade in position, if the jet weight (100kg) and discharge (400l/sec).arrow_forward
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