(10%) Problem 6: A submarine is stranded on the bottom of the ocean with its hat
ID: 1775543 • Letter: #
Question
(10%) Problem 6: A submarine is stranded on the bottom of the ocean with its hatch 25 m below the surface. In this problem, assume the density of sea water is 1.03 × 10° kg/m2 - Calculate the force, in newtons, needed to open the hatch from the inside, given it is circular and 0.65 m in diameter. The air pressure inside the submarine is 1.00 atm Grade Summary Deductions Potential 0% 100% sin0 Submissions cosO cotanO asin) acosO Attempts remaining: S % per attempt) detailed view acotan)s sinh0 atan0ai coshOtanh0 123 0 cotanho END Degrees ORadians CLEAR Submit Hint I give up! Hints: %deduction per hint. Hints remaining: 1 Feedback: 1% deduction per feedback. - -Explanation / Answer
density of sea water 1030 Kg/m3
Net pressure
P=pgh =1038*9.81*25=2.52*105 pa
Net force
F=PA=2.52*105*pi*0.652/4
F=8.382*104N
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