The moment of the force about the zero origin (0,0) is 670.82 ft-lb.
The given parameters:
The moment of the force about the zero origin (0,0) is calculated as follows;
[tex]P^2 = P_y^2 + P_x^2\\\\[/tex]
where;
[tex]P_y[/tex] is the clockwise moment
[tex]P_x[/tex] is the counterclockwise moment
[tex]P = \sqrt{600^2 + 300^2} \\\\P = 670.82 \ ft-lb[/tex]
Thus, the moment of the force about the zero origin (0,0) is 670.82 ft-lb.
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