(Solved): 4. Three forces acting on the pole are equivalent to a single force \( \mathbf{R} \). Determine (a) ...
4. Three forces acting on the pole are equivalent to a single force \( \mathbf{R} \). Determine (a) the magnitude of \( \mathbf{R} \); and (b) the resultant moment of the system about point A. (c) The moment of the 160 -lb force about axis \( O A \). Express the results as both scalar quantity and Cartesian vector.