A bucket that weighs 5 lb and a rope of negligible weight are used to draw water from a well that is 60 ft deep. The bucket is filled with 40 lb of water and is pulled up at a rate of 2 ft/s, but water leaks out of a hole in the bucket at a rate of 0.2 lb/s. Find the work done in pulling the bucket to the top of the well. Show how to approximate the required work by a Riemann sum. (Let x be the height in feet above the bottom of the well. Enter x as x₁.) lim 316 Ax Express the work as an integral. Evaluate the integral. ft-lb

Advanced Engineering Mathematics
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ISBN:9780470458365
Author:Erwin Kreyszig
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Chapter2: Second-order Linear Odes
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A bucket that weighs 5 lb and a rope of negligible weight are used to draw water from a well that is 60 ft deep. The bucket is filled with 40 lb of water and is pulled up at a rate of 2 ft/s, but water leaks out of a hole in the bucket at a rate
of 0.2 lb/s. Find the work done in pulling the bucket to the top of the well.
Show how to approximate the required work by a Riemann sum. (Let x be the height in feet above the bottom of the well. Enter x;* as xj.)
lim
noo
i=1
ΔΧ
Express the work as an integral.
Evaluate the integral.
ft-lb
dx
Transcribed Image Text:A bucket that weighs 5 lb and a rope of negligible weight are used to draw water from a well that is 60 ft deep. The bucket is filled with 40 lb of water and is pulled up at a rate of 2 ft/s, but water leaks out of a hole in the bucket at a rate of 0.2 lb/s. Find the work done in pulling the bucket to the top of the well. Show how to approximate the required work by a Riemann sum. (Let x be the height in feet above the bottom of the well. Enter x;* as xj.) lim noo i=1 ΔΧ Express the work as an integral. Evaluate the integral. ft-lb dx
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