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The 6.4-kN force F is applied at point A. (a) Compute the moment of F about point O, expressing it both as a scalar (positive if CCW, negative if CW) and as a vector quantity. (b) Determine the coordinates of the points on the x- and y-axes about which the moment of F is zero. Assume XA = 0.8 m, YA = 1.2 m, a = 7, b = 11. y, m Ih a b A(x,y) --x, m
Answers: (a) Scalar: Vector: On the x axis: On the y axis: (b) Mo= i 3.73 Moi X = y= i 1.084 i 0.69 E E kN.m i+ i j+ i k) kN.m