Packing bus for trip

[georgew]

Today getting bus packed for trip and went to put portable compressor in bus amd could hardley lift it then looked at pressure gauge It was at 120 pls realized how much I was trying to lift. Drained to 0 PSI and able to lift into coach.

[Ck2hans]

???
Air weighs little to nothing. How did reducing the PSI from 120 to 0 make the air compressor lighter???
Chuck

[twslp]

NOW THATS FUNNY.