The -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-0.9 M. YA-1.6 m, a-3, b-9. y, m A(x,y)

Structural Analysis
6th Edition
ISBN:9781337630931
Author:KASSIMALI, Aslam.
Publisher:KASSIMALI, Aslam.
Chapter2: Loads On Structures
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The 3.7-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 = 0.9 M. YA = 1.6 m, a = 3, b = 9.
y, m
A(x,y)
j+
k) kN-m
Answers:
(a) Scalar:
Vector:
On the x
axis:
On the y
axis:
(b)
Mo
i
Mo (i
x= i
y=
i
-x, m
E
E
kN-m
i+ i
Transcribed Image Text:The 3.7-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 = 0.9 M. YA = 1.6 m, a = 3, b = 9. y, m A(x,y) j+ k) kN-m Answers: (a) Scalar: Vector: On the x axis: On the y axis: (b) Mo i Mo (i x= i y= i -x, m E E kN-m i+ i
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