The now retired space shuttle weighs approximately 165,000 lbf. A particular human can exert 200 lbf. Using a hydraulic pump jack that has an area of 1 in2 on the human end how large of an area does the shuttle end need to have in in2? The pump jack has a throw of 9 in on the human end. How many pumps of the jack on the human end will be required to raise the shuttle 1 ft?