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A cable that weighs 6 lb/: is used to li 600 lb of coal up a mine shaft 450 ft deep. Find the work done.

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A cable that weighs 6 lb/: is used to li 600 lb of coal up a mine shaft 450 ft deep. Find the work done. Show how to approximate the required work by a Riemann sum. (Letx be the distance in feet below the top of the shaft. Enter Xi* as Xi.) \" (SP i=1 Express the work as an integral. HS in Evaluate the integral. EM

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