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T1 sin 30 + T2 sin 60 = mg T1 = ? ; T2 = ? ; α1 = 30° ; α2 = 60° T1 sin 30 + T2 sin 60 = 40 x 10 = 400 N (ΣFy=0) T1 cos 30 = T2 cos 60 (ΣFx=0) T1 sin 30 = 400 T1 = 400/sin30 = 400 x √3 = 800 N T1 cos 30 = T2 cos 60 T2 = T1 cos30/cos60 = 800 x 1/√3 = 400 N Jadi, tegangan tali T1 = 800 N
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