Determine The Resultant Moment Of The Two Forces About The Oa Ax

Determine the resultant moment of the two forces about the Oa axis. Express the result as a Cartesian vector.

Given:
F1 = 80 lb
F2 = 50 lb
α = 120 deg
β = 60 deg
γ = 45 deg
a = 5 ft
b = 4 ft
c = 6 ft
θ = 30 deg
φ = 30 deg

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