Question

A swimming pool of width 8 metre and length 23metre is filled with water to a depth of 4metre . Calculate pressure on the bottom of the pool due to water. Density of water =1000kg/m^3 and gravity =9.8m/s^2

Answer 1

Answer:

pressure on bottom is due to 2 things : due to water in the pool and due to atmospheric pressure .  

since you are asking pressure due to water , is density  

x g x height  

=  1000 x 10 x 3           because water density = 1000 kg/m^3

= 30000 N  

if u want total pressure u can add atmospheric pressure to this .  

hope you understood .

Answer 2

$39200 \: pa$

Explanation:

$Given, \: \: height = 4m \\ then \\ we \: \: know \: \: that \\ \boxed{pressure = density \times g\times \: h } \\ pressure = 1000kg {m}^{ - 3} \times 9.8m {s}^{ - 2} \times 4m \\ = 39200 \: pa$