Jawabanmu

2014-03-31T05:52:25+07:00
M udara=50:10=5
m air=5:10=0,5

5*0,5= 25hasilnya
 
2014-03-31T06:00:07+07:00
Fa = wu - wa w = m.g jadi, 50.10 - 5*10 = 450