A cable that weighs 8 Ib/ft is used to lift 750 Ib of coal up a mine shaft 600 ft deep. Find the work done. Show how to approximate the required work by a Riemann sum. (Let x be the distance in feet below the top of the shaft. Enter x,* as x;.) lim Ax Express the work as an integral. 7 x3 - 8 * )dx Evaluate the integral. 2273/4 X 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 cable that weighs 8 Ib/ft is used to lift 750 Ib of coal up a mine shaft 600 ft deep. Find the work done.
Show how to approximate the required work by a Riemann sum. (Let x be the distance in feet below the top of the shaft. Enter x,* as x;.)
lim
Ax
Express the work as an integral.
7
x3 - 8
* )dx
Evaluate the integral.
2273/4
X ft-lb
Transcribed Image Text:A cable that weighs 8 Ib/ft is used to lift 750 Ib of coal up a mine shaft 600 ft deep. Find the work done. Show how to approximate the required work by a Riemann sum. (Let x be the distance in feet below the top of the shaft. Enter x,* as x;.) lim Ax Express the work as an integral. 7 x3 - 8 * )dx Evaluate the integral. 2273/4 X ft-lb
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