A force (FCD = 4.49 kN) is applied to a utility pole as shown. a) Write an algebraic expression with appropriate subscripts for the moment about the line passing through OF. What alternate moment arms could be used? b) Create a 3x3 determinant for the moment about line OF and solve. What does the sign of your answer indicate? c) Find the shortest distance between line OF and the line of action of the force.
A force (FCD = 4.49 kN) is applied to a utility pole as shown.
a) Write an algebraic expression with appropriate subscripts for the moment about the line passing through OF. What alternate moment arms could be used?
b) Create a 3x3 determinant for the moment about line OF and solve. What does the sign of your answer indicate?
c) Find the shortest distance between line OF and the line of action of the force.
d) Find the 3D angle between OF and CD.
As per the guidelines, I can solve only first three sub-parts. For rest part pleas re-post in a separate post.
Given data,
The applied force in CD, FCD = 4.49 KN
Coordinates of O = (0, 0, 0)
Coordinates of F = (1, -2.4, 0)
Coordinates of D =(0, 3, 0)
Coordinates of C = (-1.5, 0, 4.5)
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