Answered: Liquid film of thickness h Block…

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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Question

A block of weight W slides down an inclined plane while
lubricated by a thin fi lm of oil, as in Fig. P1.45. The fi lm
contact area is A and its thickness is h . Assuming a linear
velocity distribution in the fi lm, derive an expression for
the “terminal” (zero-acceleration) velocity V of the block.
Find the terminal velocity of the block if the block mass is
6 kg, A = 35 cm ² , θ = 15 ° , and the fi lm is 1-mm-thick SAE
30 oil at 20 ° C.

Liquid film of
thickness h
Block contact
aгea A

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