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Wu = 20 N
massa jenis air (rho) = 1 g/cm³ = 1.000 kg/m³
Wf = ?
Penyelesaian:
Fa = rho x g x V
Fa = (1.000)(10)(0,0002)
Fa = 2 N
Wf = Wu - Fa
Wf = 20 N - 2 N
Wf = 18 N