The 5.6-kN force Fis 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 1.2 m, VA- 1.5 m, a-6,b- 12. y, m --X, m

Structural Analysis
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ISBN:9781337630931
Author:KASSIMALI, Aslam.
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Chapter2: Loads On Structures
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The 5.6-kN force Fis 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 = 1.2 m, VA = 1.5 m, a = 6, b = 12.
y, m
----X, m
Answers:
(a) Scalar:
Mo=
kN-m
Vector:
Mo =(
i+
k) kh
On the x
(b)
axis:
m
On the y
y =
m
axis:
Transcribed Image Text:The 5.6-kN force Fis 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 = 1.2 m, VA = 1.5 m, a = 6, b = 12. y, m ----X, m Answers: (a) Scalar: Mo= kN-m Vector: Mo =( i+ k) kh On the x (b) axis: m On the y y = m axis:
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