the barral of a common pump (pump for warer ) is 50 cm long and its bottom is 6 m from the surface of water. If the cross - section of the cross - section of the thinner pipe joining the barrel with water in well 3/14 of that of the barrel, find the height of the water in the pipe after the first stoke. (water barometer is 9 m of water .
`A xx 1/2 + 3/14Axx (6-x)
A(24/14 - 3/14x)A/14(25-3x)`
final pressure =(9-x)m of water , now use `P_(1) V_(1) = P_(2) V_(2)`]

Answer

1.3 m