1. An engineer estimates that under the most adverse expected weather conditions, the total force on

1. An engineer estimates that under the
most adverse expected weather conditions, the total force on the highway sign
in Fig. 11–32 will be , acting at the CM.
What torque does this force exert about the base O?

FIGURE 11–32

2. Use the result of Problem 26 to
determine (a) the vector product  and (b) the angle between  and  if  and .