Find the fluid force (in lb) on a circular observation window of radius 1 foot in a vertical wall of a large water-filled tank at a fish hatchery when the center of the window is 8 feet and d feet (d> 1) below the water's surface (see figure). Use trigonometric substitution to evaluate the one integral. Water weighs 62.4 pounds per cubic foot. (Recall that in Section 7.7, in a similar problem, you evaluated one integral by a geometric formula and the other by observing that the integrand was odd.) (a) 8 feet (b) d feet below. X X lb lb x² + y² = 1 Q

Advanced Engineering Mathematics
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Author:Erwin Kreyszig
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Chapter2: Second-order Linear Odes
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Find the fluid force (in lb) on a circular observation window of radius 1 foot in a vertical wall of a large water-filled tank at a fish hatchery when the center of the window is 8 feet and d feet (d > 1)
below the water's surface (see figure). Use trigonometric substitution to evaluate the one integral. Water weighs 62.4 pounds per cubic foot. (Recall that in Section 7.7, in a similar problem, you
evaluated one integral by a geometric formula and the other by observing that the integrand was odd.)
(a) 8 feet
(b) d feet below
X
lb
lb
x² + y² = 1
-2
2
X
Transcribed Image Text:Find the fluid force (in lb) on a circular observation window of radius 1 foot in a vertical wall of a large water-filled tank at a fish hatchery when the center of the window is 8 feet and d feet (d > 1) below the water's surface (see figure). Use trigonometric substitution to evaluate the one integral. Water weighs 62.4 pounds per cubic foot. (Recall that in Section 7.7, in a similar problem, you evaluated one integral by a geometric formula and the other by observing that the integrand was odd.) (a) 8 feet (b) d feet below X lb lb x² + y² = 1 -2 2 X
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