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P = m / V
P . V = m
m = P . V
m = ( 2,4 gr/cm^3 ) . ( 5 cm^3) =====> [satuan cm^3 bisa dicoret, maka tinggal satuan gr atau gram ]
Maka didapat :
m = (2,4 gr) . (5) = 12 gr = 12 gram = 12 /1000 kg
m = 0,012 kg
Maka gaya berat (W) = m . g
W = 0,012 kg x 9,8 m/s^2
W = 0,012 x 9,8 x (kg x m/s^2)
W = 0,1176 N <--
semoga membantu :)