F R = F1 - F2 = 25 1 = 45 2 = 20 3 Ʃ = − − 3 2 1 = 25 − 45 – 20 = −40 Contoh soal resultan gaya = 10 1 = 20 = 22 1 2 = 5 = 18 2 3 = 40 3 Ʃ = + − 3 1 2 = 10 + 20 – 5 Ʃ = − + 3 1 2 = 25 = 22 − 18 + 40 = −44 15