Question

find the pressure 200 below the surface of the ocean if pressure on the free surface of liquid is one atmosphere (Density of sea water =1060kg/m3)​

Answer 1

What is the pressure 200 m below the surface of the ocean if the sp. gravity of sea water is 1.03 : [Atmospheric pressure=1.013×105N/m2].

A .

21.2×105N/m2

B .

20.4×105N/m2

C .

40×104N/m2

D .

21.2×106N/m2

ANSWER

The gauge pressure at any depth is given by,

Pg=ρgh

Given, the atmospheric pressure to be Po=1.013×105Pa

The pressure at this depth will be,

P=Po+Pg

= 1.013×105+1.03×103×10×200

= 21.2×10^5 Pa