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14. Fx = F1 cos37 + F3 cos 53 =
= 10x 4/5 + 15 x (-)3/5 = -1 N
Fy = F1sin 37 + F2 + F3 sin 53
= 10 x3/5 + (-25) + 15 x 4/5 =-7 N
Fr = √(1^2+7^2) = √50 N