Problem $10\mathrm{.}1$

$10\mathrm{.}1$ Determine the energy loss due to a sudden enlargement from a $50$ mm OD $2\mathrm{.}4mm$ wall plastic pipe to a $90$ mm $OD2\mathrm{.}8mm$ wall plastic pipe when the velocity of flow is $3\frac{m}{s}$ in the smaller pipe.