Applied Fluid Mechanics: Global Edition
7th Edition
ISBN: 9781292019611
Author: Robert Mott
Publisher: Pearson Higher Education
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Chapter 17, Problem 17.24PP
To determine
Viscosity of syrup
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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 0.95. Steel weighs 79 kN/m3. If the ball is observed to fall 250 mm in 10.5 s, calculate the viscosity of the oil.
C1 (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 mm
A piston 796 mm diameter and 200 mm long works in a cylinder of 800 mm diameter. If the annular space is filled with lubricating oil of viscosity 5 centipoise, calculate the speed of descent in m/s of the piston in vertical position. The weight of the piston and the axial load are 9.81N. (Choices: a) 6.12 b) 7.84 c) 10.56 d) 8.24)
Chapter 17 Solutions
Applied Fluid Mechanics: Global Edition
Ch. 17 - A cylinder 25 mm in diameter is placed...Ch. 17 - As part of an advertising sign on the top of a...Ch. 17 - Determine the terminal velocity (see Section 2.6.4...Ch. 17 - Calculate the moment at the base of a flagpole...Ch. 17 - A pitcher throws a baseball without spin with a...Ch. 17 - A parachute in the form of a hemispherical cup 1.5...Ch. 17 - Calculate the required diameter of a parachute in...Ch. 17 - A ship tows an instrument in the form of a 30...Ch. 17 - A highway sign is being designed to withstand...Ch. 17 - Assuming that a semitrailer behaves as a square...
Ch. 17 - A type of level indicator incorporates four...Ch. 17 - Prob. 17.12PPCh. 17 - A bulk liquid transport truck incorporates a...Ch. 17 - A wing on a race car is supported by two...Ch. 17 - Prob. 17.15PPCh. 17 - The four designs shown in Fig. 17.16 for the cross...Ch. 17 - Prob. 17.17PPCh. 17 - Prob. 17.18PPCh. 17 - An antenna in the shape of a cylindrical rod...Ch. 17 - Prob. 17.20PPCh. 17 - Prob. 17.21PPCh. 17 - Prob. 17.22PPCh. 17 - Assume that curve 2 in Fig. 17.5 is a true...Ch. 17 - Prob. 17.24PPCh. 17 - Prob. 17.25PPCh. 17 - A small, fast boat has a specific resistance ratio...Ch. 17 - Prob. 17.27PPCh. 17 - Assume that Fig. 17.11 shows the performance of...Ch. 17 - Calculate the total drag on an airfoil that has a...Ch. 17 - Prob. 17.30PPCh. 17 - Prob. 17.31PPCh. 17 - Prob. 17.32PPCh. 17 - Prob. 17.33PP
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- Convert 15.14 poises to kinematic viscosity in m^2/s units if the liquid has a specific gravity of 0.964.arrow_forwardA 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_forwardA body weighing 77 lb with a flat surface area of 8 ft2 slides down a lubricated inclined plane making a 350 angle with the horizontal. For viscosity of 0.002089 lb-s/ft2 and a body speed of 6 ft/s, determine the lubricant film thickness in inchesarrow_forward
- If 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_forwardA plate weighing 150 N and measuring 0.8 m ×0.8 m just slides down on inclined plane over which an oil film of 1.2 mm thickness for an inclination of 30° and velocity of 0.2 m/s. Calculate the viscosity of oil.arrow_forwardsolve a and b. A shaft 80 mm in diameter is being pushed through a bearing sleeve 80.2mm in diameter and 0.3 m long. The clearance, assumed uniform is flooded with lubricating oil of viscosity 0.1 kg/ms. (a) If the shaft moves axially at 0.8 m/s, estimate the resistance force exerted by the oil on the shaft, (b) If the shaft is axially fixed and rotated at 1800 rpm, estimate the resisting torque exerted by the oil and the power required to rotate the shaft.arrow_forward
- The diameter of the sphere is 2 mm. Calculate the value of the Reynolds number for the sphere with 2 mm of diameter when it is moving with a speed of 0.05 m/s. [The value of viscosity is 12 N.s/m² and the value of density is 1300 kg/m']arrow_forward1. 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_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_forward
- Air with density of 1.225 kg/m^3 and viscosity of 1.789 x 10^-5 kg/m-s flows in a wind tunnel, the wind tunnel spped is measured with Pitot tube probe. For a certain run, the stagantion pressure is measured to be 472.6 Pa gage and the statric pressure is 15.43 Pa gage. Calculate the wind tunnel speed.arrow_forwardA tape, of width w = 25.40 mm is to be coated on both sides with a lubricant by drawing in throughnarrow gap of length, L as depicted in Figure 2. Following below values are given:c = 0.300 mm, t = 0.381 mm, and L = 20.0 mm.The lubricant, of dynamic viscosity = 1.0054 kg/m.s completelys fills the gap and the velocitydistribution is asssumed to linear as shown in Figure 2. The maximum allowable force in tape isgiven as F = 30.04 N. Find the maximum allowable tape speedarrow_forwardWhat methods exist to calculate the viscosity of dense gases and liquids?arrow_forward
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