Assume $h-6$ in$.,=28.$

Concept:

Pressure changes for a flow in a pipe are dependent on the flow velocities, elevation change, the transfer of mechanical work, and frictional losses.

$($a$)$ What is the specific weight of the water? $v_w-$

$($b$)$ What is the specific weight of the mercury? $V_{\text{m}\text{e}\text{r}}-$

$($c$)$ What is the static pressure difference from section $(1)$ to section $(2)$ as reflected by the manometer $($use minus sign if decrease$)?\frac{?}{{?}_{\frac{?}{?}}P}-$

$($d$)$ What is the pressure difference from section $(1)$ to section $(2)$ due to elevation change $($use minus sign if decrease$)?P_e.$

$($e$)$ What is the change in dynamic pressure from section $(1)$ to section $(2)($use minus sign if decrease$)?P_d-$

$($f$)$ What is the net change in pressure from section $(1)$ to section $(2)?P_{\text{n}\text{e}\text{t}}-$

$($g$)$ What is the magnitude of the loss in energy per unit mass from section $(1)$ to section $(2)?$ loss $-$

Part $2$

Solve for the axial force due to friction at the pipe wall acting on the flow.

$($a$)$ What is the cross$-$sectional area of the pipe? A $-$

$($b$)$ What is the net force due to pressure for the flow from section $(1)$ to section $(2)?F_{\text{n}\text{e}\text{t}}-$

$($c$)$ What is the volume of the fluid in the pipe between section $(1)$ and section $(2)?$ V $-$

$($d$)$ What is the magnitude of the weight of the fluid in the pipe between section $(1)$ and section $(2)?$ w $-$

$($e$)$ What is the component of weight acting in the axial flow direction? $w_2-$

$($f$)$ What is the change in momentum flux between section $(1)$ and section $(2)?R-$