Question:
james cameron piloted a submersible craft to the bottom of the challenger deep, the deepest point on the ocean's floor, 11,000 m below the surface. what was the total inward force on the 1.1-m-diameter pilot sphere in which cameron sat?

hydrostatic pressure:
the pressure exerted by a liquid at a depth inside it is called hydrostatic pressure.

this pressure is given as rho g h

where h is the depth from the free surface,

g is the acceleration due to gravity,

rho is the density of the fluid.

this pressure is proportional to the depth.

the pressure is the same at all points at the same depth.

the pressure is due to the weight of the liquid. pressure