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= 20 N - 15 N
= 5 N
b) Fa = ρ.air . g . V.benda tercelup
5 = 1000. 10 V.benda tercelup
5 = 10.000 .V.benda tercelup
V.benda tercelup = 5 : 10000
= 0,0005 m³
karena benda recelup seluruhnya ,maka V.benda = 0,0005 m³
c) w = m.g
15 = m . 10
m = 15 : 10
= 1,5
ρ.benda =
=
= 3000 kg/m³