(a) Show that the volume of a segment of height h of a sphere of radius r is
(See the figure.)
(b) Show that if a sphere of radius 1 is sliced by a plane at a distance x from the center in such a way that the volume of one segment is twice the volume of the other, then x is a solution of the equation
3x3 − 9x + 2 = 0
where 0 < x < 1. Use Newton’s method to find x accurate to four decimal places.
(c) Using the formula for the volume of a segment of a sphere, it can be shown that the depth x to which a floating sphere of radius r s inks in water is a root of the equation
x3 − 3rx2 + 4r3s = 0
where s is the specific gravity of the sphere. Suppose a wooden sphere of radius 0.5 m has specific gravity 0.75. Calculate, to four-decimal-place accuracy, the depth to which the sphere will sink.
(d) A hemispherical bowl has radius 5 inches and water is running into the bowl at the rate of 0.2 in3/s.
(i) How fast is the water level in the bowl rising at the instant the water is 3 inches deep?
(ii) At a certain instant, the water is 4 inches deep. How long will it take to fill the bowl?
FIGURE FOR PROBLEM 5
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Bundle: Calculus: Early Transcendentals, 8th + WebAssign Printed Access Card for Stewart's Calculus: Early Transcendentals, 8th Edition, Multi-Term
- Algebra & Trigonometry with Analytic GeometryAlgebraISBN:9781133382119Author:SwokowskiPublisher:Cengage