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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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Transcribed Image Text:Figure
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Part C
3 of 3
As shown, a server at a restaurant is carrying a tray that has a glass of water resting on it. (Figure 3) The glass and tray
exert a force with magnitude F = 5.50 lb on the server's hand. If ₁ = 1.40 ft, l2 = 1.05 ft, l3 = 0.400 ft, a₁ = 145
and a2 110, what is the moment of force about the shoulder joint at point A? Assume that moments acting in the
counterclockwise direction about point A are positive whereas moments acting in the clockwise direction are negative.
Express your answer numerically in pound-feet to three significant figures.
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