Final answer:
To determine the magnitude of the resultant couple moment, calculate the torque and moment of inertia.
Step-by-step explanation:
To determine the magnitude of the resultant couple moment of the two couples that act on the assembly, we need to calculate the torque and moment of inertia.
The torque can be found by multiplying the force by the radius and the sine of the angle between them. In this case, the torque is (1.50 m)(250 N) = 375 N·m.
To find the moment of inertia, we need more information.