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Required information

A construction crane lifts a prestressed concrete beam weighing $15$ short tons from the ground to the top of piers that are $24ft$ above the ground.

NOTE: This is a multi$-$part question. Once an answer is submitted, you will be unable to return to this part.

Determine the amount of work done considering the beam as the system. Take the value of $g$ as $32\mathrm{.}174f\frac{t}{s^2}.$

The amount of work done is lbf$.$ft$.$