Problem: A submarine is stranded on the bottom of the ocean with its hatch 25 m below the surface. In this problem, assume the density of the sea water is 1.03 x 103 kg/m3. Calculate the force, in newtons, needed to open the hatch from the inside, given it is circular and 0.45m in diameter. The air pressure inside the submarine is 1.00 atm

FREE Expert Solution

Pressure in fluids:

P=hρg

Force and Pressure:

P=FA

ρseawater = 1.03 × 103 Kg/m3

h = 25 m

g = 9.8 m/s2

diameter, d = 0.45 m

A = πr2 = π(d/2)2 = π(0.45/2)2 = 0.159 m2

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Problem Details

A submarine is stranded on the bottom of the ocean with its hatch 25 m below the surface. In this problem, assume the density of the sea water is 1.03 x 103 kg/m3. Calculate the force, in newtons, needed to open the hatch from the inside, given it is circular and 0.45m in diameter. The air pressure inside the submarine is 1.00 atm