Applied Fluid Mechanics (7th Edition)
7th Edition
ISBN: 9780132558921
Author: Robert L. Mott, Joseph A. Untener
Publisher: PEARSON
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Textbook Question
Chapter 5, Problem 5.49PP
For the foam cup described in Problem 5.28, will it float stably if placed in the water with its axis vertical?
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A 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.
A wood cone floats in water in the position shown in fig.2.The specific gravity of the wood is 0.6. Would it be stable?
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 N
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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- Calculate the fluid force on one side of a 5 ft by 5 ftsquare plate if the plate is at the bottom of a pool filled with waterto a depth of 8 ft anda. lying flat on its 5 ft by 5 ft face.b. resting vertically on a 5-ft edge.c. resting on a 5-ft edge and tilted at 45° to the bottom of the poolarrow_forward2. A long cylindrical log of specific gravity 2/3 will float in water with its axis horizontal. As its length gradually is reduced it will float in the same position. If its length is reduced so that it is only a fraction of its diameter, it will float with its axis vertical. What is its diameter-to-length ratio for which it will just float with its axis vertical?arrow_forwardProblem 2 A cube of wood (s.g.-0.60) has 9 in sides. Compute the magnitude and direction of the force required to hold the wood completely submerged in water.arrow_forward
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- PROBLEM 5 Two cubes of the same size, 1 m³, one of SG = 0.80 and the other of SG = 1.1, are connected by a short wire and placed in water. (a) What volume (m³) of the lighter cube is above the water surface, and (b) what is the tension (N) in the wire?arrow_forwardYou will complete at least 6 identical trials of the experiment. (Yes, this means obsen least 6 times!) If you have outliers, throw them out and gather more data. You want to maximize pre Hint: Carefully consider the shape of the water that is displaced. Recall that the tub is a cylinder, and the interior of the tank is cube shaped. cm Column Nam *** units variable units variable 20 0.001 30 0.002 *** 40 0.003 ... 50 0.004 *** 60 0.005 .*. 70 0.006 **. Seores 0/12 3. 4. 5, 6 1.arrow_forwardFor the composite cylinder shown in Fig. 5.25, what thick-ness of brass is required to cause the cylinder to float in the position shown in carbon tetrachloride at 25°C?arrow_forward
- For the composite cylinder shown in Fig. 5.25, what thick- ness of brass is required to cause the cylinder to float in the position shown in carbon tetrachloride at 25°C?arrow_forwardState Pascal’s principle and give one application of the principle. An object is dropped into a beaker of water. Two forces are operating on the object viz. the weight of object and the buoyant force FB due to the fluid. Explain, in terms of the forces when the object. a.) Sinks to the bottom of the beaker b.)Floats in the water A hydraulic press for compacting powdered samples has a large cylinder with a diameter of 10.0 cm and a small cylinder of diameter 2.0 cm. If a force of 350 N is applied to the small cylinder, what will be the force exerted by the fluid on the large cylinder? Be consistent with your units.arrow_forwardA cube with edges measuring 80 mm is constructed of foam rubber and floats in water, with 50 mm of its body below the surface. Calculate the magnitude and direction of the force required to fully immerse it in glycerin, which has a specific gravity of 1.36arrow_forward
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