![\"\"](\"/userfiles/image/steps_images/step1.JPG\")
If a constant force F is applied to an object, and the resulting movement of the object is represented by the displacement vector d, then the work performed by the force is Work = F . d.
\![\"\"](\"/userfiles/image/steps_images/step2.JPG\")
The vectors are ![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=a10d7b7e24888c04d97f8e16ed741063.png\")
and ![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=964d98409452447c06c6e8f001fd0276.png\")
.
Work = F . d.
\ ![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=33982d73d71632eabad6b4a332849793.png\")
![\"\"](\"/userfiles/image/steps_images/solution.JPG\")
The work is 1080 ft-lb.