Jawabanmu

Jawaban paling cerdas!
2014-04-07T21:50:38+07:00
Peny:
Wf = Wu - FA
Wf = Wu – (p V g)
Wf = 30 N – (2,5 .0,4 .10)
Wf = 30 – (10)
Wf = 20 N

1 5 1
2014-04-07T22:06:13+07:00
Dit : Wf= ...?

Wf = Wu - Fa
     = 30 - (ro x g x v)
     = 30 -  ( 2,5 x 10 x 0,6)
     = 30 - 15
     = 15 N