A small submarine, with a hatch door 30 in in diameter, is submerged in seawater. $(a)$ If the water hydrostatic force on the hatch is 69,000 lbf, how deep is the sub? (b) If the sub is 350 ft deep, what is the hydrostatic force on the hatch?
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The area of a circle is given by the formula $A = \pi r^2$, where $r$ is the radius. Since the diameter is 30 inches, the radius is 15 inches. Show more…
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