$2\mathrm{.}8\mathrm{.}16$ A structire is altached to the occen floor as whown in the fig below. A $2-$m$-$diameter hatch is loceled in an indincal wall onel hinyed on me edge. Detamm Ole mimmons as prousire, $p_1,$ witt in Gle entaines thent will open the hatch. Weyleit the weight of the hatch of frectuon in the hry$..$

solution.

Girven: Diameter of hotel $d=2m$ opeabic werght ${}_{\text{s}\text{e}\text{e}\text{w}\text{a}\text{t}\text{e}}=100,\frac{k}{(m)}$

Reyuird: minimion air Pressere P$?$

$F_r=hcA-(1)$

$=10*\frac{kN}{m^3}$

$A=(m{)}^2=3\mathrm{.}1416m^2$

$hc=10mt$

$F_R=sin{y}_{C}A$

$F_R=orhsubA.$

$howtofind{y}_c$

$CA$ how to find he

Plese explem with resoming in small steps.

Please dont solve just fond hc and yc with steps and explanation so that i can find both for other problems