Question

At what velocity does water emerge from an orifice in a tank in which guage pressure is 3 x 105 Nm-2before the flow starts? Density of water 1000kgm-3

Answer 1

Explanation:

Here,P=3×105Nm−2,

ρ=1000kgm−3,

ρ=1000kgm−3,g=9.8ms−2

ρ=1000kgm−3,g=9.8ms−2As P=hρg

ρ=1000kgm−3,g=9.8ms−2As P=hρg∴h=ρ/Pg=1000×9.83×105m

ρ=1000kgm−3,g=9.8ms−2As P=hρg∴h=ρ/Pg=1000×9.83×105mVelocity of efflux,

ρ=1000kgm−3,g=9.8ms−2As P=hρg∴h=ρ/Pg=1000×9.83×105mVelocity of efflux,$v - \sqrt{2gh} - \sqrt{2 \times 9.8 \times 3 \times 10 ^{5} } \div 1000 \times 9.8$

$= \sqrt{600 } = 24.495ms^{ - 1} = 24.5 {ms}^{ - 1}$