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F1 = 6N
F2 = 4N
α = 60
ditanyakan :
R =?
jawab :
R² = F1²+F2² + 2F1F2 cos α
R² = 6² + 4² + 2 (6) (4) cos 60
R² = 36 + 16 + 24
R² = 76
R = √76 N = 2√19 N
F1 = 6N
F2 = 4N
α = 60'
Ditanya: R....?
jawab:
R = √F1² + F2² + 2.F1.F2 cos α
R = √6² + 4² + 2.6.4 cos60
R = √36 + 16 + 48 (0,5)
R = √52 + 24
R = √76
R = 8,7 N