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= 8 N
Fa = wb - wb dalam air
= 8 - 7,5
= 0,5 N
m = 800 gr = 0,8 kg
g = 10 m/s
Wf = 7,5 N
dit: Fa ?
jb: Wu = m . g
Wu = 0,8 . 10
Wu = 8 N
Fa = Wu - Wf
Fa = 8 - 7,5
Fa = 0,5 N