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g = 10 N/kg
F2 = 10 . sin 60° = 10 . 1/2√3 = 5√3 N
F1 = 8 . sin 30° = 8 . 1/2 = 4 N
N?
penyelesaian:
N = w - F2 - F1
N = m g - F2 - F1
N = 2 . 10 - 1/2√3 - 4
N = 20 - 1/2√3 - 4
N = 16 - 1/2√3 Newton