Question: ( Tweaked version of Problem 2 . 8 2 ) A supervillain has contacted you to design a secret underwater entrance to his lair. The

(Tweaked version of Problem 2.82) A supervillain has contacted you
to design a secret underwater entrance to his lair. The structure will
be attached to the ocean floor (seawater =1030 kg/m3) and consist of
a circular, 0.5 m diameter hatch on an inclined wall and hinged on
one edge. Despite your moral misgivings, you take the job.

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