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h = 60 mm = 0,06 m
pb = 7,7x10^3 kg/m^3
pr = 13,6x10^3 kg/m^3
g = 10 m/s
Dit h celup ?
rumus Fa = Wb - Wc
= Vb > Vc
Ph besi di udara= p g h
= 7700 . 10 . 0,06
= 4620 pa
Ph raksa cair = p g h
= 13600 . 10 . 0,06
= 8160 Pa
Fa = W
Ph = W / A
luas kubus = 6.s^2 = 6. 0,06^2 = 0,0216 m^2
Ph = W / A
Wb = 4620 x 0,0216
= 99,792 N
Wc = 12 780 x 0,0216
= 276,048
Fa = Wb - Wc
= 276,048 - 99,792
= 176,256
Fa = pc g vc
masukan ke p = m/v
jadi tingginya rusuk (13,6 - 7,7) = 0,1
atau dengan cara pb gb hb = pr gr hr
7700 .hb= 13600 .0,06
hb = 13600 . 0,06 / 7700 = 0,1 m
jadi 0,1 - 0,06 = 0,045 m