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ΣFy = 0
mg = Fa
ρk * g * Vk = ρc * g * Vc
0.8 * [10^3] = 1.2 * Vc
Vc = 2000/3 cm^3
Tinggi = Vc/Area
Tinggi = Vc/(10^2)
Tinggi = 6.67 cm
b. Gaya ke atas = gaya archimedes = Fa
Fa = ρc * g * Vc
= 1200 kg/m^3 * 10m/s^2 * 1/1500m^3
= 8N