A 30N force is applied at the point P(0.30m,0.40m) and is directed toward the point Q(0.70m,0.60m) in the same plane. Determine the magnitude of the torque of this force about the origin. (All coordinates are measured in metres.)
a) 4.0N m
b) 9.0N m
c) 6.7N m
d) 13N m