# A cable that weighs 6 lb/ft is used to lift 800 lb of coal up a mine shaft 450 ft deep. Find the work done.A.) 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 xi* as xi.)B.) Express the work as an integral.C.)Evaluate the integral.

Question
Asked Dec 2, 2019
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A cable that weighs 6 lb/ft is used to lift 800 lb of coal up a mine shaft 450 ft deep. Find the work done.

A.) 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 xi* as xi.)

B.) Express the work as an integral.

C.)Evaluate the integral.

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Step 1

Given that a cable that weighs 6 lb/ft is used to lift 800 lb of coal up a mine shaft 450 ft deep

Step 2

To begin with we consider the following assumption.

Step 3

b) Now, express the work...

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