Question

The surface of water in a water tank on the top of a house is $4m$ above the tap level. Find the pressure of water at the tap when the tap is closed. Is it necessary to specify that the tap is closed? Take $g=10m{s}^{-2}$.

Answer 1

Given ,

Water tank is $4m$ above the top level

we know that,

density of water $\left(\rho \right)=1000kg/m^3$

acceleration due to the gravity $\left(g\right)=10m/s^2$

height $\left(h\right)=4m$

we know pressure $\left(P\right)=\rho gh$

$P=1000\times 10\times 4N/m^2$

$P=40000N/m^2$.

Hence the pressure is $40000N/m^2$