The 2.8-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 - 1.0 m, yA = 1.3 m, a = 6, b = 11. y, m A (x, y₂) i k) kN-m Answers: (a) Scalar: Vector: On the x axis: On the y axis: (b) b a Mo= i Mo=( i X = i y= Mi -x, m E m kN-m i + i +
The 2.8-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 - 1.0 m, yA = 1.3 m, a = 6, b = 11. y, m A (x, y₂) i k) kN-m Answers: (a) Scalar: Vector: On the x axis: On the y axis: (b) b a Mo= i Mo=( i X = i y= Mi -x, m E m kN-m i + i +
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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Question
The 2.8-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
(b) Determine the coordinates of the points on the x- and y-axes about which the moment of F is zero.
Assume xA = 1.0 m, yA = 1.3 m, a = 6, b = 11.
Transcribed Image Text:The 2.8-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 = 1.0 m, yA = 1.3 m, a = 6, b = 11.
y, m
A (x, y₁)
j+
i
k) kN-m
F
Answers:
(a) Scalar:
Vector:
On the x
axis:
On the y
axis:
(b)
b
a
Mo=
i
Moi
X = i
y = i
-x, m
3
m
kN.m
i+i
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