2) A Plate is dragging between two walls by a velocity of 0.054 m/s. The space between plate and lower wall is 30 mm and filled with oil while the space between the plate and the upper wall is 20 mm and filled with water. The velocity distribution in oil between plate and lower wall is given by: u = 60(0.06y – y²), where y is measured in m and u in m/s. determine the force p that is required to maintain the velocity of plate when the area of plate is 1 m?. Upper wall D2 Water Plate D, Oil Lower wall

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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1) A cylindrical capsule filled by liquid with SG = 1.5 is falling
inside a pipe, as depicted in the figure. The small space
between the capsule and the pipe is lubricated with an oil
film that has viscosity (u =0.1 x 10-3Pa.s).. Find the steady
Pipe
Oil film
rate of descent of a capsule with diameter d = 50 mm, and
length / = 100 mm sliding inside a vertical smooth pipe that
has inside diameter D = 52 mm. Assume that the capsule is
concentric with the pipe as it falls.
Capsule
2) A Plate is dragging between two walls by a velocity of 0.054 m/s. The space
between plate and lower wall is 30 mm and filled with oil while the space between
the plate and the upper wall is 20 mm and filled with water. The velocity
distribution in oil between plate and lower wall is given by: u = 60(0.06y – y?),
where y is measured in m and u in m/s. determine the force p that is required to
maintain the velocity of plate when the area of plate is 1 m2.
Upper wall
D2
Water
Plate
P.
D1
Oil
Lower wall
Transcribed Image Text:1) A cylindrical capsule filled by liquid with SG = 1.5 is falling inside a pipe, as depicted in the figure. The small space between the capsule and the pipe is lubricated with an oil film that has viscosity (u =0.1 x 10-3Pa.s).. Find the steady Pipe Oil film rate of descent of a capsule with diameter d = 50 mm, and length / = 100 mm sliding inside a vertical smooth pipe that has inside diameter D = 52 mm. Assume that the capsule is concentric with the pipe as it falls. Capsule 2) A Plate is dragging between two walls by a velocity of 0.054 m/s. The space between plate and lower wall is 30 mm and filled with oil while the space between the plate and the upper wall is 20 mm and filled with water. The velocity distribution in oil between plate and lower wall is given by: u = 60(0.06y – y?), where y is measured in m and u in m/s. determine the force p that is required to maintain the velocity of plate when the area of plate is 1 m2. Upper wall D2 Water Plate P. D1 Oil Lower wall
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