PAKAI CARA YA KAKAKk

1. R = F1+F2+F3    16 = -4F+8F+6F   16 = 10 F     F = 16/10 = 1,6 Newton
2.  w ari = 1/3 w ayah     w ayah = 980 N     w ari = 1/3 x 980 = 980/3 N     w = m x g     m = w/g = 980/3 : 9,8 = 980/3 : 98/10 = 980/3 x 10/98 = 100/3 = 33,3 kg