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A cylinder weighs 20 kg slides in a lubricated pipe, The clearance between cylinder and the...
1. A m = 0.5 kg piston slides in a lubricated cylinder at a constant velocity...
1. A m = 0.5 kg piston slides in a lubricated cylinder at a constant velocity U = 1.5 m/s under the gravity effect. The piston has a diameter of D= 20 cm and a length of L = 8 cm. The thickness of the lubrication oil film is d = 0.2 mm. Please find the viscosity u of the lubrication oil. (5 marks) Cylinder Wall Oil Film Piston T
Problem 10 Consider a cylinder falling inside a pipe that is filled with oil. The small...
Problem 10 Consider a cylinder falling inside a pipe that is filled with oil. The small space between the cylinder ant the pipe is lubricated with an oil film that has viscosity u. Pipe Derive a formula for the steady rate of descent of a cylinder with weight W, diameter d, and length l sliding inside a vertical smooth pipe that has inside diameter D. Assume that the cylinder is concentric with the pipe as it falls. Use the general...
Oil (density 900 kg/m' and absolute viscosity 0.2 kg/m-s) flows through a pipe 20-m-long and 4-cm...
Oil (density 900 kg/m' and absolute viscosity 0.2 kg/m-s) flows through a pipe 20-m-long and 4-cm wide in inner diameter a- The flow rate is 47 liters/min. when the pipe is laid horizontally. Calculate the pressure needed at the pipe inlet. (7 points) b- If the exit end of pipe is raised by 0.2 m, please find the flow rate at this slope while the inlet pressure remains the same as in the situation (a). (8 points) (a) Air 0.2m...
Consider an oil of density p 800 kg/m3, viscosity u 0.01 Pa.s (10 times the viscosity of water), ...
Consider an oil of density p 800 kg/m3, viscosity u 0.01 Pa.s (10 times the viscosity of water), heat capacity of Cp 2 k]/(kg K) and thermal conductivity of Koll -0.15 W/(mk). This oil flows at mass flowrate of 30 kg/minute through a copper pipe of d- 2 cm inner diameter, with wall thickness of t-1 mm. At the relevant conditions, copper has thermal conductivity of ke 400 W/(m.K). The copper pipe loses heat to the surroundings of Tsurr 20°C...
(a) A horizontal pipe of diameter 10 cm carries crude oil from A to C as...
(a) A horizontal pipe of diameter 10 cm carries crude oil from A
to C as shown in Figure 4. At a point B, midway between A and C,
oil leaks at a volume flow rate of QL . The pressure
drop per unit length along AB is 640 Pa/m and along BC is 600 Pa/m.
Determine the leakage flow rate QL . The density of oil
is 800 kg/m3 and its dynamic viscosity is 0.1 N.s/
m2 . You...
Problem The relation between pressure drop and flow rate of laminar flows in a pipe is given by l...
Problem The relation between pressure drop and flow rate of laminar flows in a pipe is given by l bar 50 m 20° 128u dz PS Flow rate Q is the product of the average velocity and the cross-sectional area of the pipe What is the pressure needed to drive a viscous oil flow upslope through a 12 cm diameter pipe? The length of the pipe is 50 meters. The slope is 20°. At the end of the pipe, the...
A 50-kg solid circular cylinder A rests on a 35-kg block B as shown in Fig....
A 50-kg solid circular cylinder A rests on a 35-kg block B as
shown in Fig. P16-112. When a force F is applied to the block, the
block accelerates at a rate of 5 m/s2. If the coefficients of
friction between the block and the cylinder and between the block
and the horizontal surface are both μs = μk = 0.25, determine the
magnitude of F and the frictional force exerted by the block on the
cylinder.
Fig. P16-112 150...
(c) Fuel oil, with a density of 870 kg m-, is pumped through a horizontal pipe,...
(c) Fuel oil, with a density of 870 kg m-, is pumped through a horizontal pipe, as shown in Figure Q2.2. The pipe is 100 mm in diameter and contains an orifice plate with a throat diameter of 40 mm. The pressure drop across the orifice is measured on a U-tube manometer, containing mercury with a specific gravity 13.6. The difference in levels of the columns is measured as 45 mm. The coefficient of discharge for the orifice plate Ca...
Question 2 (20 marks): A 1 kg ball A is traveling horizontally at 20 m/s when...
Question 2 (20 marks): A 1 kg ball A is traveling horizontally at 20 m/s when it strikes a 10 kg block B that is at rest. If the coefficient of restitution between A and B is e = 0.6, and the coefficient of kinetic friction between the plane and the block is uy = 0.4, determine: 1. speed of the ball and block after the collision 2. the time for the block to stop sliding 3. the distance the...
32 The uniform 100-kg crate is supported by the thin homogeneous 20-kg platform BF and light...
32 The uniform 100-kg crate is supported by the thin homogeneous 20-kg platform BF and light support links whose motion is controlled by the hydraulic cylinder CD. If the cylinder is extending at a con- stant rate of 150 mm/s when e magnitudes of the forces supported by the pins at B and F. Additionally, determine the total friction force acting on the crate. The crate is centered on the 1.8-m platform, and friction is sufficient to keep the crate...
1. A m = 0.5 kg piston slides in a lubricated cylinder at a constant velocity U = 1.5 m/s under the gravity effect. The piston has a diameter of D= 20 cm and a length of L = 8 cm. The thickness of the lubrication oil film is d = 0.2 mm. Please find the viscosity u of the lubrication oil. (5 marks) Cylinder Wall Oil Film Piston T
Problem 10 Consider a cylinder falling inside a pipe that is filled with oil. The small space between the cylinder ant the pipe is lubricated with an oil film that has viscosity u. Pipe Derive a formula for the steady rate of descent of a cylinder with weight W, diameter d, and length l sliding inside a vertical smooth pipe that has inside diameter D. Assume that the cylinder is concentric with the pipe as it falls. Use the general...
Oil (density 900 kg/m' and absolute viscosity 0.2 kg/m-s) flows through a pipe 20-m-long and 4-cm wide in inner diameter a- The flow rate is 47 liters/min. when the pipe is laid horizontally. Calculate the pressure needed at the pipe inlet. (7 points) b- If the exit end of pipe is raised by 0.2 m, please find the flow rate at this slope while the inlet pressure remains the same as in the situation (a). (8 points) (a) Air 0.2m...
Consider an oil of density p 800 kg/m3, viscosity u 0.01 Pa.s (10 times the viscosity of water), heat capacity of Cp 2 k]/(kg K) and thermal conductivity of Koll -0.15 W/(mk). This oil flows at mass flowrate of 30 kg/minute through a copper pipe of d- 2 cm inner diameter, with wall thickness of t-1 mm. At the relevant conditions, copper has thermal conductivity of ke 400 W/(m.K). The copper pipe loses heat to the surroundings of Tsurr 20°C...
(a) A horizontal pipe of diameter 10 cm carries crude oil from A
to C as shown in Figure 4. At a point B, midway between A and C,
oil leaks at a volume flow rate of QL . The pressure
drop per unit length along AB is 640 Pa/m and along BC is 600 Pa/m.
Determine the leakage flow rate QL . The density of oil
is 800 kg/m3 and its dynamic viscosity is 0.1 N.s/
m2 . You...
Problem The relation between pressure drop and flow rate of laminar flows in a pipe is given by l bar 50 m 20° 128u dz PS Flow rate Q is the product of the average velocity and the cross-sectional area of the pipe What is the pressure needed to drive a viscous oil flow upslope through a 12 cm diameter pipe? The length of the pipe is 50 meters. The slope is 20°. At the end of the pipe, the...
A 50-kg solid circular cylinder A rests on a 35-kg block B as
shown in Fig. P16-112. When a force F is applied to the block, the
block accelerates at a rate of 5 m/s2. If the coefficients of
friction between the block and the cylinder and between the block
and the horizontal surface are both μs = μk = 0.25, determine the
magnitude of F and the frictional force exerted by the block on the
cylinder.
Fig. P16-112 150...
(c) Fuel oil, with a density of 870 kg m-, is pumped through a horizontal pipe, as shown in Figure Q2.2. The pipe is 100 mm in diameter and contains an orifice plate with a throat diameter of 40 mm. The pressure drop across the orifice is measured on a U-tube manometer, containing mercury with a specific gravity 13.6. The difference in levels of the columns is measured as 45 mm. The coefficient of discharge for the orifice plate Ca...
Question 2 (20 marks): A 1 kg ball A is traveling horizontally at 20 m/s when it strikes a 10 kg block B that is at rest. If the coefficient of restitution between A and B is e = 0.6, and the coefficient of kinetic friction between the plane and the block is uy = 0.4, determine: 1. speed of the ball and block after the collision 2. the time for the block to stop sliding 3. the distance the...
32 The uniform 100-kg crate is supported by the thin homogeneous 20-kg platform BF and light support links whose motion is controlled by the hydraulic cylinder CD. If the cylinder is extending at a con- stant rate of 150 mm/s when e magnitudes of the forces supported by the pins at B and F. Additionally, determine the total friction force acting on the crate. The crate is centered on the 1.8-m platform, and friction is sufficient to keep the crate...
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