Question

To lift 1000 pounds, you must have ________ ft3 of air

Answer 1

use :Mass/volume=density

Answer 2

you would need to know the density of that material which you are comparing cubic feet of air

Answer 3

Is there a hydraulic cylinder doing the lifting? any other info or dimensions?

Answer 4

if it was hydraulic cyliunder then it would have been water...though it would have made more sense