Applied Fluid Mechanics (7th Edition)
7th Edition
ISBN: 9780132558921
Author: Robert L. Mott, Joseph A. Untener
Publisher: PEARSON
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Chapter 5, Problem 5.4PP
A cylindrical float has a
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q6 A 1 kg cylinder of plastic has a length of 105 mm and a diameter of 40 mm. Calculate its specific gravity and state whether it would float or sink in water.
7.58; sink
7.58; float
0.27; sink
0.27; float
The magnitude of the buoyant force is proportional to the volume of fluid displaced by the object.
Select one:
O True
O False
The center of gravity of the floating body and its center of buoyancy must lie on the same vertical axis.
Select one:
O True
O False
An object with a larger density than that of a fluid floats in that fluid.
Select one:
O True
O False
5.4 A cylindrical float has a 10-in diameter and is 12 in long.
What should be the specific weight of the float material if
it is to have 9/10 of its volume below the surface of a fluid
with a specific gravity of 1.10?
m in diameter and 1.2 m
1:J
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Chapter 5 Solutions
Applied Fluid Mechanics (7th Edition)
Ch. 5 - The instrument package shown in Fig. 5.18 weighs...Ch. 5 - A 1.0 -m-diameter hollow sphere weighing 200 N is...Ch. 5 - A certain standard steel pipe has an outside...Ch. 5 - A cylindrical float has a 10 -in diameter and is...Ch. 5 - A buoy is a solid cylinder 0.3 m in diameter and...Ch. 5 - A float to be used as a level indicator is being...Ch. 5 - A concrete block with a specific weight of...Ch. 5 - Figure 5.19shows a pump partially submerged in oil...Ch. 5 - A steel cube 100mm on a side weighs 80N. We want...Ch. 5 - A cylindrical drum is 2 ft in diameter, 3 ft long,...
Ch. 5 - If the aluminum weights described in Problem 5.10...Ch. 5 - Figure 5.20 shows a cube floating in a fluid....Ch. 5 - A hydrometer is a device for indicating the...Ch. 5 - For the hydrometer designed in Problem 5.13 what...Ch. 5 - For the hydrometer designed in Problem 5.13 , what...Ch. 5 - A buoy is to support a cone-shaped instrument...Ch. 5 - A cube has side dimensions of 18.00 in. It is made...Ch. 5 - A cube has side dimensions of 18.00 in. It is made...Ch. 5 - A ship has a mass of 292 Mg. Compute the volume of...Ch. 5 - An iceberg has a specific weight of 8.72kN/m3....Ch. 5 - A cylindrical log has a diameter of 450 mm and a...Ch. 5 - The cylinder shown in Fig. 5.23 is made from a...Ch. 5 - If the cylinder from Problem 5.22 is placed in...Ch. 5 - A brass weight is to be attached to the bottom of...Ch. 5 - For the cylinder with the added brass (described...Ch. 5 - For the composite cylinder shown in Fig. 5.25 what...Ch. 5 - A vessel for a special experiment has a hollow...Ch. 5 - A light foam cup similar to a disposable coffee...Ch. 5 - A light foam cup similar to a disposable coffee...Ch. 5 - Repeat Problem 5.29, but consider that the steel...Ch. 5 - Figure 5.27 shows a raft made of four hollow drums...Ch. 5 - Figure 5.28 shows the construction of the platform...Ch. 5 - For the raft shown in Fig. 5.27, how much of the...Ch. 5 - For the raft and platform shown in Figs. 5.27 and...Ch. 5 - A float in an ocean harbor is made from a uniform...Ch. 5 - Describe how the situation described in Problem...Ch. 5 - A cube 6.00 in on a side is made from aluminum...Ch. 5 - Prob. 5.38PPCh. 5 - A cylindrical block of wood is 1.00 m in diameter...Ch. 5 - A container for an emergency beacon is a...Ch. 5 - The large platform shown in Fig. 5.29 carries...Ch. 5 - Will the cylindrical float described in Problem...Ch. 5 - Will the buoy described in Problem 5.5 be stable...Ch. 5 - Will the float described in Problem 5.6 be stable...Ch. 5 - A closed, hollow, empty drum has a diameter of...Ch. 5 - Figure 5.30 shows a river scow used to carry bulk...Ch. 5 - Prob. 5.47PPCh. 5 - For the vessel shown in Fig. 5.26and described in...Ch. 5 - For the foam cup described in Problem 5.28, will...Ch. 5 - Referring to Problem 5.29, assume that the steel...Ch. 5 - Referring to Problem 5.30, assume that the steel...Ch. 5 - Prob. 5.52PPCh. 5 - Will the cylinder together with the brass plate...Ch. 5 - A proposed design for a part of a seawall consists...Ch. 5 - A platform is being designed to support some water...Ch. 5 - Prob. 5.56PPCh. 5 - A barge is 60 ft long, 20 ft wide, and 8 ft deep....Ch. 5 - If the barge in Problem 5.57 is loaded with 240000...Ch. 5 - A piece of cork having a specific weight of...Ch. 5 - Figure 5.20 shows a cube floating in a fluid, (a)...Ch. 5 - A boat is shown in Fig. 5.33(a). Its geometry at...Ch. 5 - (a) If the cone shown in Fig. 5.34 is made of pine...Ch. 5 - Refer to Fig. 5.35. The vessel shown is to be used...Ch. 5 - Prob. 5.64PPCh. 5 - Wetsuits are prohibited in some triathlons due to...Ch. 5 - A cylinder that is 500 mm in diameter and 2.0 m...Ch. 5 - The diving bell shown in Fig. 5.2 weighs 72 kN and...Ch. 5 - Prob. 5.68PPCh. 5 - A scuba diver with wet suit, tank, and gear has a...Ch. 5 - Prob. 5.70PPCh. 5 - Does steel float? It has a specific gravity of...Ch. 5 - Prob. 5.72PPCh. 5 - An undersea camera (Figure 5.36 ) is to hang from...Ch. 5 - Work Problem 5.73 again, but this time the camera...Ch. 5 - Write a program for evaluating the stability of a...Ch. 5 - For any cylinder of a uniform density floating in...Ch. 5 - For the results found in Project 2, compute the...Ch. 5 - Write a program for evaluating the stability of a...Ch. 5 - Write a program for determining the stability of a...
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- 1. What is the value of the surface tension of a small droplet of water 0.4mm in diameter which is in contact with air if the pressure within the droplet is 565 Pa? 2. An atmospheric pressure of 116 KPa will be supported by how much height of mercury?arrow_forwardProblem 1. What is the mass of the ball in kg, if it weighs 300 Kgr? Problem 2. A closed drum contains oil with a height of .75 meters. What is the pressure at the bottom of the container? (Specific Gravity of oil is 0.845) Problem 3. A drinking glass of water has a height of 12.7cm, if the height of the water inside is half of the glass, what is the absolute pressure at the bottom of the glass? Problem 4. An engineer made his own temperature scale name "Ligem Scale". Its boiling point scale is 400 Ligem and its freezing point scale is 150 Ligem. Derive the Formula for the conversion of Ligem to Celsius. What is 355 Ligem in Celsius? m Problem 5. A stream of air is passing through a pipe in a steady flow process. The velocity is 18- at the kg 0.25 meter-diameter entrance with a density of 1.20 m3 If the velocity of the air at the exit section is lb what is the diameter of the pipe at the exit? m 30", density is 0.078- ft3 ,arrow_forwardAn object weighs 100 N in the air and 25 N when submerged in water. Calculate its volume and specificweight.arrow_forward
- 2. A tank that weighs 5kg is filled with 3 liquids shown below. What is the force at the bottom of the sea water (S.G. = 1.3) if the diameter of the tank is 2m. 1 m S.G. = 0.8 S.G = 0.9 1.5 m S.G.= 1.3 2.5 marrow_forward1.When a double-bottom tank is full of fresh water it holds 120 tonnes.Find how many tonnes of ol of relative density 0.84 it will hold. 2. A tank measures 20 m. X 24m X 10.5 m. and contains oil of relative density 0.84.Find the mass of oll it contains when the ullage is 2.bm. (Ulage is the distance from the surface of the liquid in the tank to the top of the tank)arrow_forwardA cube 80 mm per side is made of a rigid foam material and floats in water with 60 mm of the cube below the surface. Calculate the magnitude and direction of the force required to hold it completely submerged in glycerine, which has a specific gravity of 1.26.arrow_forward
- Question 1 1 point Prewoos Aright circular cone is 100 mm in diameter and 200 mm high and weighs 1.6 N in air. How much force is required to push the cone (vertex downward) into a body of liquid having sp. Gr. Of 0.8, so that its base is exactly at the surface? How much additional force is required to push the base 100 mm below the surface? A. 2.51 N O B. 8.49 N O C. 7.735 N D. 3.65 Narrow_forwardWhat height of oil column will cause the pressure of 575kn/m2? What is the equivalent height of mercury column? What is the equivalent height of water column? What is the equivalent height og special gage liquid column with specific gravity of 1.36 NOTE: Clear handwritten solutionarrow_forwardProblem 2: A 20 cm^3 cylindrical object has a density of 0.876 g/ml. When placed in a container of water, how much of its volume will be submerged under water?arrow_forward
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