Determine the moment of the force F about point O, about point A, and about the line OB. Find the general results in terms of F, a, b, and c. Then answer with these numbers: F - 480 N, a - 255 mm, b = 565 mm, c - 375 mm. b. a F B. Answers: k) N-m Mo - k) N-m MA - k) N-m -