(a) (b) For the system shown below, determine the resultant moment about point O. Information given: = (-31 +48 + 5k) m, 7 = (51 - 6j + 4k) m, F = (-301 + 45j + 45k) N, and F = (501-55) + 60k) N [8 Marks] Sketch the resultant moment in the right-handed coordinate system shown below. Your sketch should include the sense of direction and sense of rotation of the resultant [2 marks] moment. F 72