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This is the chemical engineering questions and answers section on "Fluid Mechanics Section 13" with explanation for various interview, competitive examination and entrance test. Solved examples with detailed answer description, explanation are given and it would be easy to understand - Page 10. Negative buoyancy occurs when an object is denser than the fluid it displaces. The object will sink because its weight is greater than the buoyant force. A submarine is designed to operate underwater by storing and releasing water through ballast tanks. If the command is given to descend, the tanks take in water and increase the vessel's density.

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If the center of gravity is above the center of buoyancy, an overturning moment is produced and the body is unstable. Note : As the body is totally submerged, the shape of displaced fluid is not altered when the body is tilted and so the center of buoyancy unchanged relative to the body. Figure 4: Stability of submerged objects
• For problems involving heat transfer Θ(temperature) can also be a basic dimension. • For the example we are studying basic dimensions of variables are [ ]= 𝑇2, = , [ ]= 𝑇, [𝜌]= 3, [𝜇]= 𝑇 • Our example involves 𝑟=3primary dimensions. For most fluid mechanics problems 𝑟will be 3. The answer to “Consider two identical spherical balls submerged in water at different depths. Will the buoyant forces acting on these two balls be the same or different? Explain.” is broken down into a number of easy to follow steps, and 26 words. Fluid Mechanics was written by and is associated to the ISBN: 9780071284219.

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Jun 07, 2017 · (a) any weight, floating or immersed in a liquid, is acted upon by a buoyant force (p) Buoyant force is equal to the weight of the liquid displaced (c) The point through which buoyant force acts, is called the center of buoyancy (d) Center of buoyancy is located above the center of gravity of the displaced liquid v (e) Relative density of liquids can be
Fluid Mechanics. Solutions of Selected Problems 14.1 Problem 14.18 (In the text book) Mercury is poured into a U-tube as in Figure (14.18a). The left arm of the tube has cross-sectional area A 1 of 10.0 cm2, and the right arm has a cross-sectional area A 2 of 5.00 cm2. Force Exerted by II Jet on II Hinged Plate Solved Problems 17.7- 17.10 (a) 17.4. Force Exerted by II Jet on Moving Plates 17.4.1. Force on Flat Vertical Plate Moving in the Direction of J et 17.4.2. Force on the Inclined Plate Moving in the Direction of the Jet Solved Problems 17.ll- 17.13 17.4.3. Force on the Curved Plate when the Plate is ...

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Fluid Mechanics Problems for Qualifying Exam (Fall 2014) 1. Consider a steady, incompressible boundary layer with thickness, δ(x), that de-velops on a flat plate with leading edge at x = 0. Based on a control volume analysis for the dashed box, answer the following: a) Provide an expression for the mass flux ˙m based on ρ,V ∞,andδ.
Answers 1. E 2. D 3. B 4. E 5. A 6. D 7. B 8. A 9. A 10. C 11. D 12. C 13. A 14. D 15. A 16. E 17. E 18. D 19. C 20. E 1. a) mg/x 1 b) Buoyant force and Force of the spring up and mg down c) mg(1-x 2 /x 1) d) D(1-x 2 /x 1) 2. a) 6.3x106N b) 3.1x106J c) 1.38 m/s d) 39.4 m/s 3. a) 31.7s b) 1.03x106N/m2 c) 1.13x106N/m2 d)2.06x106N/m2 4. a)Buoyant Force up and mg down b) 1.8x105N resultant hydrostatic force on a body due to fluid surrounding it 32. A right circular wooden cone (specific gravity = 0.80) with a base diameter of 0.6 m and height of 0.8 m floats in water such that its axis is vertical and apex is downward.

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Archimedes’ principle is one of the most essential laws of physics and fluid mechanics. Basically the principle states an object immersed in a fluid is buoyed up by a force equal to the weight of the fluid that it displaces. This principle, which is perhaps the most fundamental law hydrostatics, explains many nain t-
This upward force exerted by the liquid on the body is called the Force of Buoyancy or Upthrust. This principle is called Archimedes’ Principle of Buoyancy. Since the force of Buoyancy is a vertical force and equal to the weight of the liquid displaced by the body, the point of action of the buoyant force is the centre of gravity of the liquid displaced. Solution for Calculate the buoyant force, if a floating body is 95% submerged in water. The density of water is 1000 kg.m-3

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Self contained mobile unit for many experiments in fluid mechanics. Amongst other experiments it covers: properties of fluids, hydrostatic principles and buoyancy / floatation and Archimedes' principle.
Problem 5.25: F is the streamwise-component of the force. Problem 5.28: The answer is correct for the force exerted by the fluid on the vane (Won Yoo) Problem 5.30c: Should be U^2/g = 1.63 m (Ellen Longmire) Problem 6.12: Answer should be YES the flow is incompressible (Ellen Longmire) Problem 6.15: Answer should be YES the flow is ... Jul 02, 2011 · All of these questions are applications of Archimedes' principle - 'the buoyancy force is equal to the weight of the displaced volume of fluid'. 1) Questions involving the conversion of non-SI units to SI are generally not worth bothering with, since nowadays everyone uses SI, and conversion problems are a waste of intellectual energy.

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The mechanics of secondary hydrocarbon migration and entrapment are well-understood physical processes that can be dealt with quantitatively in hydrocarbon exploration. The main driving force for secondary migration of hydrocarbons is buoyancy. If the densities of the hydrocarbon phase and the water phase are known, then the magnitude of the buoyant force can be determined for any hydrocarbon column in the subsurface.
Aug 08, 2015 · Download a reference book of Fluid Mechanics and Hydraulic Machinery. This book contains 21 chapter with objective type question. This book is very popular for Mechanical engineering student for use of As Reference book, GATE Preparation, Competitive exam Preparation, Campus interview, and study related to fluid mechanics.