Question

The Mariana trench is located in the Pacific Ocean at a depth of about 10300 m below the surface of the water. The density of seawater is 1025 kg/m3
(a) If an underwater vehicle were to explore such a depth, what force would the water exert on the vehicle's observation window (radius = 0.14 m)?
(b) For comparison, determine the weight of a jetliner whose mass is 1.4 105 kg.

Answer 1

(a) force = (window area) x (pressure)
The pressure is
P = (water density)*g*(depth)

(b) jetliner weight = M g

Do the numbers