Question

A research submarine has a 40-cm-diameter window that is 8.4 cm thick. The manufacturer says the window can withstand forces up to 1.2×106 N . What is the submarine's maximum safe depth in sea water? The pressure inside the submarine is maintained at 1.0 atmatm.

Answer 1

Maximum force that window can withstand, F =

Maximum gauge pressure that it can withstand, P = F/A

Gauge Pressure at depth h, = where is density of liquid. (For water = 1000kg/m3)

The submarine can go to a max depth of 954m safely.