Answered: This problem involves a cylinder…

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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This problem involves a cylinder falling Inside a pipe that is filled with oil, is depleted in the figure. The small space between the cylinder and the pipe is labricated with an oll film that has aboolute viscosity j. (a) Derive a formula for the steady rate of descent of a cylinder with weight W, diameter d. and length sliding inside a vertical smooth pipe that has inside diameter D. Aesume that the cylinder is concentric with the pipe as it falls. (b) Use the general formula you derive to find the rate of descent of a cylinder 100mm in diameter that slide inside a 100.5mm diameter pipe. The cylinder is 200mm long and weighs 15N. The lubricant is SAE 2OW oll with a viscosity of 2.0 x 10- Pax.

Pipe
re
er
D.
al
er
nd
Oil film
Cylinder

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