Replace the force system by an equivalent resultant force and couple moment at point O (Figure 1). Set F = 18 lb and F2 = 18 lb. Part A Figure -2 in- 30 6 in. 40 1.5 in. 1 of 1 Determine the magnitude of the resultant force. Express your answer in pounds to three significant figures. vec FR= Submit Request Answer Part B Determine the angle between the resultant force and the x axis. Express your answer in degrees to three significant figures. 1 vec 0 = Submit Request Answer Part C ? lb , measured counterclockwise from the positive axis Part C Determine the equivalent resultant couple moment about point O. Express your answer in pound-inches to three significant figures. Enter positive value if the moment is counterclockwise and negative value if the moment is clockwise. (MR)o= Submit . vec 0 ? Request Answer lb.in.