Applied Fluid Mechanics (7th Edition)
7th Edition
ISBN: 9780132558921
Author: Robert L. Mott, Joseph A. Untener
Publisher: PEARSON
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Chapter 2, Problem 2.61PP
In a falling-ball viscometer, a steel ball 1.6 mm in diameter is allowed to fall freely in a heavy fuel oil having a specific gravity of 0.94. Steel weighs
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Chapter 2 Solutions
Applied Fluid Mechanics (7th Edition)
Ch. 2 - Define shear stress as it applies to a moving...Ch. 2 - Define velocity gradient.Ch. 2 - State the mathematical definition for dynamic...Ch. 2 - Which would have the greater dynamic viscosity, a...Ch. 2 - State the standard units for dynamic viscosity in...Ch. 2 - State the standard units for dynamic viscosity in...Ch. 2 - State the equivalent units for poise in terms of...Ch. 2 - Why are the units of poise and centipoise...Ch. 2 - State the mathematical definition for kinematic...Ch. 2 - State the standard units for kinematic viscosity...
Ch. 2 - State the standard units for kinematic viscosity...Ch. 2 - State the equivalent units for stoke in terms of...Ch. 2 - Why are the units of stoke and centistoke...Ch. 2 - Define a Newtonian fluid.Ch. 2 - Define a non-Newtonian fluid.Ch. 2 - Give five examples of Newtonian fluids.Ch. 2 - Give four examples of the types of fluids that are...Ch. 2 - Appendix D iS gives dynamic viscosity for a...Ch. 2 - Appendix D gives dynamic viscosity for a variety...Ch. 2 - Appendix D gives dynamic viscosity for a variety...Ch. 2 - Appendix D iS gives dynamic viscosity for a...Ch. 2 - Appendix D iS gives dynamic viscosity for a...Ch. 2 - Appendix D gives dynamic viscosity for a variety...Ch. 2 - Appendix D gives dynamic viscosity for a variety...Ch. 2 - Appendix D gives dynamic viscosity for a variety...Ch. 2 - Appendix D gives dynamic viscosity for a variety...Ch. 2 - Appendix D gives dynamic viscosity for a variety...Ch. 2 - Appendix D gives dynamic viscosity for a variety...Ch. 2 - Appendix D gives dynamic viscosity for a variety...Ch. 2 - Appendix D gives dynamic viscosity for a variety...Ch. 2 - Appendix D gives dynamic viscosity for a variety...Ch. 2 - Appendix D gives dynamic viscosity for a variety...Ch. 2 - Appendix D gives dynamic viscosity for a variety...Ch. 2 - Appendix D gives dynamic viscosity for a variety...Ch. 2 - Appendix D gives dynamic viscosity for a variety...Ch. 2 - Appendix D gives dynamic viscosity for a variety...Ch. 2 - If you want to choose a fluid that exhibits a...Ch. 2 - Which type of viscosity measurement method uses...Ch. 2 - In the rotating-drum viscometer, describe how the...Ch. 2 - In the rotating-drum viscometer, describe how the...Ch. 2 - What measurements must be taken to determine...Ch. 2 - Define the term terminal velocity as it applies to...Ch. 2 - What measurements must be taken to determine...Ch. 2 - Describe the basic features of the Saybolt...Ch. 2 - Are the results of the Saybolt viscometer tests...Ch. 2 - Does the Saybolt viscometer produce data related...Ch. 2 - Which type of viscometer is prescribed by SAE for...Ch. 2 - Describe the difference between an SAE 20 oil and...Ch. 2 - What grades of SAE oil are suitable for...Ch. 2 - What grades of SAE oil are suitable for...Ch. 2 - If you were asked to check the viscosity of an oil...Ch. 2 - If you were asked to check the viscosity of an oil...Ch. 2 - Prob. 2.53PPCh. 2 - The viscosity of a lubricating oil is given as 500...Ch. 2 - Using the data from Table 2.5. report the minimum,...Ch. 2 - Convert a dynamic viscosity measurement of 4500 cP...Ch. 2 - Convert a kinematic viscosity measurement of 5.6...Ch. 2 - The viscosity of an oil is given as 80 SUS at...Ch. 2 - Convert a viscosity measurement of 6.5x103 Pa.s...Ch. 2 - An oil container indicates that it has a viscosity...Ch. 2 - In a falling-ball viscometer, a steel ball 1.6 mm...Ch. 2 - A capillary tube viscometer similar to that shown...Ch. 2 - In a falling-ball viscometer, a steel ball with a...Ch. 2 - A capillary type viscometer similar to that shown...Ch. 2 - A fluid has a kinematic viscosity of 15.0 mm2/s at...Ch. 2 - A fluid has a kinematic viscosity of 55.3 mm2/s at...Ch. 2 - A fluid has a kinematic viscosity of 188 mm2/s at...Ch. 2 - A fluid has a kinematic viscosity of 244 mm2/s at...Ch. 2 - A fluid has a kinematic viscosity of 153mm2/s at...Ch. 2 - A fluid has a kinematic viscosity of 205mm2/s at...Ch. 2 - An oil is tested using a Saybolt viscometer and...Ch. 2 - An oil is tested using a Saybolt viscometer and...Ch. 2 - Prob. 2.73PPCh. 2 - Prob. 2.74PPCh. 2 - An oil is tested using a Saybolt viscometer and...Ch. 2 - Prob. 2.76PPCh. 2 - Convert all of the kinematic viscosity data in...Ch. 2 - Use a spreadsheet to display the values of...
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- A concentric cylinder viscometer is driven by a falling mass M connected by a cord and pulley to the inner cylinder. Annular gap of width a and height H has been filled with liquid to be tested. The speed of the falling mass is Vm. Develop an algebraic expression for the viscosity of the liquid. Evaluate the viscosity of the liquid using M= 0.1 Kg, R=50mm, H=80 mm, r=25mm, a=0.20mm and Vm = 94arrow_forwardIf Reynolds number relate the inertial and viscous forces, which of the following relates the inertial andgravitational forces?A. Froude NumberB. Weber NumberC. Galileo NumberD. Eotvos Numberarrow_forwardSAE 10W30 motor oil has a dynamic viscosity of 0.21 kilograms per meter second and a specific gravity of 0.896 (a) What is the density of the motor oil in units of kilograms per cubic meter?arrow_forward
- The kinematic viscosity of a liquid is 0.058 cm^2/s and has a density of 500 kg/m^3. What is the absolute viscosity in poisearrow_forwardFalling Sphere Viscometer Given: Inner diameter of cylindrical tube = 0.03 m Diameter of sphere = 0.02 m Mass of sphere = 0.025 kg Mass of liquid = 0.08 kg Height of liquid = 0.14 m Distance travelled by the sphere in the liquid = 0.06 m Time of travel by the sphere in the liquid = 95 s Calculate: The viscosity of the liquid in Pa – s. NOTE: Answer the situations with complete solutions. Write your final answer in two decimal places. Please input the correct unit. Thankyouarrow_forwardC1 (a). A lubricating oil having the dynamic viscosity of 0.055 poise and kinematic viscosity of 0.17 stokes. Calculate (i) the density of oil in kg/m3, (ii) the weight density of oil in N/m3,(iii) the specific gravity, and (iv) the specific volume in m3/kg. C1 (b). Calculate the capillary effect in mm in a glass tube of 4.4 mm diameter, when immersed in (1) water (2) mercury. The values of surface tension in contact with air are 0.0737 N/m and 0.54 N/m respectively. The contact angle for water =00 and mercury =1300. (Enter only the values by referring to the unit given. Also, upload the handwritten answers in the link provided) C1(a).(i).The density of oil in kg/m3 C1(a). (ii) the weight density of oil in N/m3 C1(a). (iii) the specific gravity C1(a). (iv) the specific volume in m3/kg C1 (b). 1.The capillary effect (water) in mm C1 (b). 2.The capillary effect (mercury) in mmarrow_forward
- 1. Two indefinitely long flat plates separated by 3 inches in distance but with a thickness of 5 inches each carry alcohol (5 m/s, 1 Pa·s, S.G. 0.89 (ref. water at 4 degrees Celsius) to a specific destination. Find out what the Reynolds Number is. 2. Calculate the dynamic and kinematic viscosities of water at 350 degrees Kelvin Note: Use perry's handbook for the valuearrow_forwardA- Womersley number (a) of a human aorta is 20 and for the rabbit aorta is 17, the blood density is approximately the same across the species. The values of viscosity were 0.0035 Ns/m² for the human and 0.0040 Ns/m² for the rabbit. The diameter of the aorta is 2.0 cm for the man, and 0.7 cm for the rabbit, estimate the heart rate beats per minute (bpm) for both speciesarrow_forwardA Plate 0.05 mm distant from a fixed plate moves at 1.2 m/s and require a force of 2.2 N/m2 to maintain this speed. Find the viscosity of the fluid between the plates.arrow_forward
- A 10-in diameter plunger slides in a 10.006-in diameter cylinder, the annular space being filled with oil having a kinematic viscosity of 0.004 ft²/s and specific gravity of 0.85. If the plunger moves at 0.6 ft/s, find the frictional resistance when 9ft is engaged in the cylinder.arrow_forwardOne type of viscometer involves the use of a rotating cylinder inside a fixed cylinder as shown in the figure below. The gap between the cylinders must be very small to achieve a linear velocity distribution in the liquid. Design a viscometer that will be used to measure the viscosity of motor SAE 30 oil from 0°C to 100°C. Here you need to determine and report the following parameters: a. The dimensions of the two cylinders, lengths, thicknesses and diameters. b. The gap clearance between the surfaces of the cylinders. c. The rated power of the driving motor. d. The rotational speed of the shaft.arrow_forwardFind the kinematic viscosity of an oil having density of 980kg/m^2 when at a certain point in the oil, the shear stress is 0.25 Pa and the velocity gradient is 0.3 m/s.arrow_forward
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