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Q1) The roof shown in Fig 1 is hanged to the Wall at the angle at A by two cables AB and AC. If the value of F1= 150 N and F2
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F = Fi [cos 6o sinzo i + singo sin 3o ja 1 - cos 30 kn ] E = 150 cos 60 sinzo i + singo sin 30 j I - cos 30 k r Ans. E = 37.5Resultant of two force vectors in cartesian form FR = F + F2 = £i t £jl + Ź kľ for Egs. (1) 4 (2) FR = 119. 1497 ; - 16.6978

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