1. Crew members need to escape from a damaged submarine 100 m below the surface. The
dimensions of a pop-out hatch are 1.5 m height and 0.6 m wide. (internal air pressure is at 1.00
atm)
a) What force must be applied to a pop-out hatch to push it out at that depth?
(Sea water density = 1025 kg/m3
)