$11$ point

Consider a section of circular pipe with diameter $D$ and length $x$ carrying water with a flow rate $Q.$ At the upstream end, the pressure is $p_1$ and the bottom of the pipe is at an elevation of $z_1.$ At the downstream end, the pressure is $p_2$ and the bottom of the pipe is at an elevation of $z_2.$ Let $D=5\mathrm{.}0[$in$],x=89\mathrm{.}0[ft],Q=10\mathrm{.}0[$cfs$],p_1=55\mathrm{.}6[$psi$],p_2=53\mathrm{.}2[$psi$],z_1=100\mathrm{.}3[ft],$ and $z_2=99\mathrm{.}8[ft].$ What is the force exerted by friction over the length of the pipe in $[$lb$]?$ Use the small angle approximation $($sin $$~~$\frac{z}{}x$