Question

Calculate the water pressure and the thrust at the bottom of a tank whose length, width and the depth are $2m,1.5mand1m$ respectively. Density of water is $1000kg{m}^{-3}$.

• A. $9800N{m}^{-2}$
• B. $5300N{m}^{-3}$
• C. $8600N{m}^{-5}$
• D. $2600N{m}^{-2}$

Answer 1

Answer: (A)

$9800N{m}^{-2}$

Given : $h=1m,$

$d=1000kg{m}^{-3},$

$g=9.8m{s}^{-2}$

Since pressure depends only on the depth of the liquid, therefore,

$P=hdg$

$=1m\times 1000kg{m}^{-3}\times 9.8m{s}^{-2}$

$=9800N{m}^{-2}$