(1)当它在水下匀速航行时,水箱灌满水,此时潜水艇受到的浮力,F浮=ρ水gV艇=1.03×103kg/m3×10N/kg×6000m3=6.18×107N.
(2)水箱内水的重力G水=ρ水gV水=1.03×103kg/m3×10N/kg×2000m3=2.06×107N
则当潜水艇排完水箱中水时,潜水艇匀速航行时受到的浮力F浮'=G总-G水=F浮-G水=6.18×107N-2.06×107N=4.12×107N.
(1)当它在水下匀速航行时,水箱灌满水,此时潜水艇受到的浮力,F浮=ρ水gV艇=1.03×103kg/m3×10N/kg×6000m3=6.18×107N.
(2)水箱内水的重力G水=ρ水gV水=1.03×103kg/m3×10N/kg×2000m3=2.06×107N
则当潜水艇排完水箱中水时,潜水艇匀速航行时受到的浮力F浮'=G总-G水=F浮-G水=6.18×107N-2.06×107N=4.12×107N.