Question

A cylindrical water tank of diameter 15.0 m and height of 5.5 m contains 7.0 m3 of water. Calculate the force on the base of the tank. 

Answer 1

Given:

$d=15.0\:\rm m$

$h=5.5\;\rm m$

$V=7.0\:\rm m^3$

The force on the base of tank

$$F=pA=g\rho h A=g\rho V\\ =\rm 9.8\:N/kg*1000\: kg/m^3*7.0\: m^3=68600\: N$$