Question

A certain diving bell for use in the ocean has a square window measuring 0.250 m on each side. The inside of the bell is pressurized and maintained at a pressure of 2.00 atm. The mass density of seawater is 1025 kg/m3.
How deep can this bell be lowered before the vector sum of forces exerted by the seawater on the window exceeds 175 kN ?
Average speed

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