An engineer estimates that under the most adverse expected weather conditions, the total force on the highway sign in the figure (Figure 1) will be F (3.01 -4.2j) kN, acting at the cm. What is the magnitude of the torque this force exert about the base O? Express your answer using two significant figures. V 171 = ? m-N Figure 1 F BOSTONT y 8.0 m 6.0 m < 1 of 1 0 X