EXAMPLE $3\mathrm{.}5($EXERCISE$)$

A pipe of $30cm$ diameter and $400m$

length connects two reservoir with the

ends submerged in reservoirs. Discharge

through the pipe and friction factor of pipe,

$f$ are $0\mathrm{.}2$ cumecs and $0\mathrm{.}02$ respectively.

Find out the elevation difference between

the levels of water in the two reservoirs.