ch14-p022 - 22. (a) The force on face A of area AA due to...

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22. (a) The force on face A of area A A due to the water pressure alone is () 3 23 3 2 6 (2 ) 2 1.0 10 kg m 9.8m s 5.0m 2.5 10 N. AA A w A A w Fp A g h A g d d ρρ == = = × Adding the contribution from the atmospheric pressure, F 0 = (1.0 × 10 5 Pa)(5.0 m) 2 = 2.5 × 10 6 N, we have 66 6 0 ' 2.5 10 N 2.5 10 N 5.0 10 N. FF F =+= × + × = × (b) The force on face B due to water pressure alone is 3 3 3 2 avg 6 55 5 1.0 10 kg m
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