Solve it correctly please. e2.27 A vertical cylinder of 0.085 m diameter is mounted concentri-cally in a drum of 0.086 m internal diameter. Oil fills the spacebetween them to a depth of 0.4 m. The torque required to rotatethe cylinder in the drum is 6 Nm when the speed of rotation is8.5 revs/sec. Assuming that the end effects are negligible, calculatethe coefficient of viscosity of the oil. Mz0123k/msntween parallel

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Answered: 2.27 A vertical cylinder of 0.085 m…

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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A cylindrical disk ofwood weighing 45.0 N and having adiameter of 30.0 cm floats on a cylinderof oil of density 0.850 g /cm3(Fig.). The cylinder of oilis 75.0 cm deep and has a diameterthe same as that of the wood.(a) What is the gauge pressure at thetop of the oil column? (b) Supposenow that someone puts a weightof 83.0 N on top of the wood, butno oil seeps around the edge of thewood. What is the change in pressureat (i) the bottom of the oil and(ii) halfway down in the oil?
When a clean glass tube with a diameter of 2 mm is immersed in water at 20 ° C, how many mm will the capillary rise occur in the glass tube? For water at 20 ° C, surface tension is given as 0.073 N / m, density 1000 kg / m3, contact angle 0 ° C and gravitational acceleration 10 m / s2.
Find 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.
To determine the shear stress of oil, two horizontal plates are placed 15 cm apart, the space between them is filled with the oil of viscosity 15 poise. If the upper plate is moving with velocity 2,000 mm/s, find the shear stress (τ).
In Fig. both fluids are at 20 ° C. If surface tensioneffects are negligible, what is the density of the oil,in kg/m 3 ?
Three types of fluids stack in an open tank as shown in the picture. If the specific gravidties are sg1=1.00, sg2=2.00, sg3=3.00, and h1=1.00 m, h2=1.00 m, h3=1.00 m, calculate the gage pressure at location 4, P4(gage)=_________(kPa)
If a stream flowing at velocity U past a body of lengthL causes a force F on the body that depends only on U , L ,and fluid viscosity μ , then F must be proportional to(a) ρUL/μ, (b) ρU2L2, (c) μU/L, (d) μUL, (e) UL/μ
A spherical air bubble rises in water. At a depth of 9 m itsdiameter is 4 mm. What is its diameter just as it reaches thefree surface where the absolute pressure is 101.3 kPa? (Surfacetension effects are negligible.)
An oil film of thickness 1.5 mm is used for lubrication between asquare plate of size 0.9 m × 0.9 m and an inclined plane having anangle of inclination 200. The weight of the square plate is 392.4 N andit slides down the plane with a uniform velocity of 0.2 m/s. Find thedynamic viscosity of the oil
A belt moves upward at velocity V, dragging a fi lm ofviscous liquid of thickness h , as in Fig. . Near the belt,the fi lm moves upward due to no slip. At its outer edge, thefi lm moves downward due to gravity. Assuming thatthe only nonzero velocity is υ ( x ), with zero shear stress atthe outer fi lm edge, derive a formula for ( a ) υ ( x ), ( b ) the average velocity V avg in the fi lm, and ( c ) the velocity V c forwhich there is no net flow either up or down. ( d ) Sketchυ ( x ) for case ( c ).
A solid cone of angle 2θ, mass (m), base radius (r0), and density (ρc), is rotating with angular velocity (w0) on its conical seat. The clearance (h) is filled with oil of viscosity (μ). Neglecting air resistance, determine: a) an expression for the moment (M) as a function of r0, w0,μ,θ, and h. b) an expression for the angular velocity (w) for t≥0 as a function of w0,μ,θ,h, r0,m and t if an external torque is not applied. If the radius of gyration of the cone is 16 cm, determine: c ) the value of the angular momentum and velocity if w0=60RPM,h=0.05mm,θ=30°,μ=0.98cPoise , m=20kg, t=2.0s
Describe the general principles of dynamic fluid?

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