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The 4.8-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 = 1.4 m, YA = 1.8 m, a = 2, b = 4.
y, m
A (x, y₂)
L
F
b
j+
i
k) kN-r
Answers:
(a) Scalar:
Vector:
On the x
axis:
(b)
Mo= i
Moi
X =
i
-x, m
B
m
kN.m
i+ i

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