Question No $(1)$:

A pipe inclined at $30$ to the horizontal, as shown in the figure, converges over a length $L$ of $2\mathrm{.}5$ m from a diameter $d_1=200mm$ to a diameter $d_2=120mm$ at the upper end. Water flows through the pipe at a mass rate of $50k\frac{g}{s}.$ Determine:

The pressure difference across the $2\mathrm{.}5$ m conical part of the pipe.

The level difference $h$ in the $U-$tube manometer if the specific gravity

Answer: