Question

The force exerted by water on the base of a tank, of base area $1.5m^2$ when filled with water up to a height of 1 m is (Density of water is $1000kg{m}^{-3}$ and $g=10m{s}^{-2})$ :

• A. 1500 N
• B. 15000 N
• C. 3000 N
• D. 30000 N

Answer 1

The correct option is B 15000 N

$P=\rho ghP={10}^3\ast 10\ast 1P={10}^{4}N/m^2$

$F=PAF={10}^4\ast 1.5F=1.5\ast {10}^4=15000N$