Question: The A-frame is being hoisted into an upright position by the vertical force of F = 80 lb. Determine the moment of this force about

The A-frame is being hoisted into an upright position by the vertical force of F = 80 lb. Determine the moment of this force about the axis y? passing through points A and B when the frame is in the position shown.

15 6 ft 30 3 ft 3 ft

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