Homework Answers
Pressure in a fluid at rest does not change in horizontal direction but this is not the case in vertical direction.
Pressure in a fluid increases linearly with depth. so point of application of net force acting on the flat surface
will be below the centroid of the flat surface.
3rd option is correct answer.
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Question 23 (10 points) The resultant force created by a fluid on a submerged flat surface...
A penny is submerged in a glass of water and held up horizontally by a string....
A penny is submerged in a glass of water and held up horizontally by a string. The top of the penny experiences a pressure of 300 N/m2 above atmospheric pressure. What pressure is incident on the bottom surface of the penny? A. just the pressure of the atmosphere B. about 150 N/m2 above atmospheric pressure C. 0 N/m2 D. about 300 N/m2 above atmospheric pressure The applied force to a hydraulic jack is 24 N to an area of 20...
Someone please answer this question!! Thank you 2 A plane rectangular surface is submerged vertically in...
Someone please answer this question!! Thank you
2 A plane rectangular surface is submerged vertically in a liquid with its upper edge below the surface and parallel to it. Develop from first principles an expression for the depth to the centre of pressure A vertical bulkhead has a door 2m high and 1 m wide fastened by two hinges situated 15cm below the top and 15 cm above the bottom of one vertical edge, and by a bolt in the...
Question 3-Not from Textbook A force of 1200 N acts on the surface of area 10...
Question 3-Not from Textbook A force of 1200 N acts on the surface of area 10 cm2 normally. What would be the thrust and pressure on the surface?
Answer saved Points out of 100 Question 8 Prag question The figure below shows two masses...
Answer saved Points out of 100 Question 8 Prag question The figure below shows two masses m,=4.1 kg and m2=3.4 kg. The lower surface is frictionless but the surface between the blocks has an unknown coefficient of static friction us. If a horizontal force of magnitude F=51 N acts on the top block and the bottom block moves along with the top block, what is the magnitude of the static friction force which acts between the two blocks? F mg...
3 Question 5. (10 pts) Viscosity: Two flat plates are shown in figure on the right....
3 Question 5. (10 pts) Viscosity: Two flat plates are shown in figure on the right. The top plate is located at a distance b above the fixed plate and it is pulled along with constant speed V. The other thin plate is located a distance cb above the fixed plate, where (<e<1. This plate moves with speed V2, which is determined by the viscous shear forces 12 imposed on it by the fluids on its top and bottom. The...
Please show full working so I can learn to do it myself. Thank you! A tank...
Please show full working so I can learn to do it myself. Thank
you!
A tank with a curved cylindrical bottom, shown below in Figure 2, is completely filled with water of mass density 1000 kg/m3. a. Determine the horizontal and vertical components of the hydrostatic force on the curved cylindrical area ABCD. (4 marks) b. Calculate the magnitude and direction of the resultant force on the curved surface ABCD. (4 marks) c. Name the point through which this resultant...
answer is 4.05(10^-5) N Problem 1: A Newtonian fluid is confined between the plate and a...
answer is 4.05(10^-5) N
Problem 1: A Newtonian fluid is confined between the plate and a fixed surface. If the velocity profile is defined by u =(8y-0.3y) mm/s, where y is in mm, determine the force that must be applied to the plate to cause this motion. The plate has a surface area of 15 (10) mm in contact with the fluid. Use u = 0.482 (10) N.s/m(20 points) (8y-3.3y) du -0 T = Muy 72 (0.482 +5%) (8- 0.64)...
An incompressible fluid flows past an impermeable flat plate with a uniform inlet profile (U0 )...
An incompressible fluid flows past an impermeable flat plate
with a uniform inlet profile (U0 ) and a cubic
polynomial exit profile:
where
Compute the volumetric flow rate (Q=?
cm3/s) across the top surface of the
control volume.
Consider the width of the solid plate (into paper) to be b=10
cm.
U0= 15 cm/s
Air at 20°C and 1 atm flows in
a 25-cm-diameter duct at V1=20 m/s. The exit is choked
by a 90° cone.
Estimate the force of...
Question 1 (15 points): An incompressible fluid (such as water) enters the tank and exits through the valve in the...
Question 1 (15 points): An incompressible fluid (such as water) enters the tank and exits through the valve in the bottom. The fluid height (also known as head) in the tank is variable. The valve resistance is R. Derive the system equation with input q, and output h. Hint: Review modeling examples in Chapter 2 of the text book A = Tank surface area ,p-water density Output flow
Question 1 (15 points): An incompressible fluid (such as water) enters the...
Someone please answer this question!! Thank you
2 A plane rectangular surface is submerged vertically in a liquid with its upper edge below the surface and parallel to it. Develop from first principles an expression for the depth to the centre of pressure A vertical bulkhead has a door 2m high and 1 m wide fastened by two hinges situated 15cm below the top and 15 cm above the bottom of one vertical edge, and by a bolt in the...
Question 3-Not from Textbook A force of 1200 N acts on the surface of area 10 cm2 normally. What would be the thrust and pressure on the surface?
Answer saved Points out of 100 Question 8 Prag question The figure below shows two masses m,=4.1 kg and m2=3.4 kg. The lower surface is frictionless but the surface between the blocks has an unknown coefficient of static friction us. If a horizontal force of magnitude F=51 N acts on the top block and the bottom block moves along with the top block, what is the magnitude of the static friction force which acts between the two blocks? F mg...
3 Question 5. (10 pts) Viscosity: Two flat plates are shown in figure on the right. The top plate is located at a distance b above the fixed plate and it is pulled along with constant speed V. The other thin plate is located a distance cb above the fixed plate, where (<e<1. This plate moves with speed V2, which is determined by the viscous shear forces 12 imposed on it by the fluids on its top and bottom. The...
Please show full working so I can learn to do it myself. Thank
you!
A tank with a curved cylindrical bottom, shown below in Figure 2, is completely filled with water of mass density 1000 kg/m3. a. Determine the horizontal and vertical components of the hydrostatic force on the curved cylindrical area ABCD. (4 marks) b. Calculate the magnitude and direction of the resultant force on the curved surface ABCD. (4 marks) c. Name the point through which this resultant...
answer is 4.05(10^-5) N
Problem 1: A Newtonian fluid is confined between the plate and a fixed surface. If the velocity profile is defined by u =(8y-0.3y) mm/s, where y is in mm, determine the force that must be applied to the plate to cause this motion. The plate has a surface area of 15 (10) mm in contact with the fluid. Use u = 0.482 (10) N.s/m(20 points) (8y-3.3y) du -0 T = Muy 72 (0.482 +5%) (8- 0.64)...
An incompressible fluid flows past an impermeable flat plate
with a uniform inlet profile (U0 ) and a cubic
polynomial exit profile:
where
Compute the volumetric flow rate (Q=?
cm3/s) across the top surface of the
control volume.
Consider the width of the solid plate (into paper) to be b=10
cm.
U0= 15 cm/s
Air at 20°C and 1 atm flows in
a 25-cm-diameter duct at V1=20 m/s. The exit is choked
by a 90° cone.
Estimate the force of...
Question 1 (15 points): An incompressible fluid (such as water) enters the tank and exits through the valve in the bottom. The fluid height (also known as head) in the tank is variable. The valve resistance is R. Derive the system equation with input q, and output h. Hint: Review modeling examples in Chapter 2 of the text book A = Tank surface area ,p-water density Output flow
Question 1 (15 points): An incompressible fluid (such as water) enters the...
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