Jawabanmu

2014-04-06T09:56:20+07:00
Sigma F= m.a
F-(w.sin 53+koef.gesek. w cos 53)= 20 X 3
F- (200. 0,8 + 1/3. 200. 0,6) = 60
F- (160+ 40)=60
F-200=60
F= 260 N

*Corret me if i wrong ^^