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HOMEWORK 27.B - SP 24
10 thoughts on “HOMEWORK 27.B - SP 24”
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To start, should we section this into 0<x<3d, 0<x<4d, and 0<x<7d sections to determine the shear and moment values during these intervals?
I believe it would be 0<x<3d, 3d<x<4d, and then 4d<x<7d because that was how we split the beam into multiple sections during the class examples.
But when we calculate the sheer and bending force at each sections, we have to start from A point right??
You take into account the forces at A but that doesn't apply to the bounds of your range.
I think you draw free body diagrams for what the beam looks like for 0 < x < 3d, 0 < x < 4d, and 0 < x < 7d, but each of these free body diagrams only applies for when 0 < x < 3d, 3d < x < 4d and 4d < x < 7d (respectively).
The free body diagram from 0<x<4d will include the forces from 0-3d, but the equations derived will only apply to 3d-4d.
I guess the M stands for the moment at C right? I just want to make sure.
Yes, there is a couple of M at C and another couple of 2M at A.
The value for M is 30 kip-fit as given in the instructions.
is M the moment at C or it is just moment acting on the system?
it is a second moment that is applied at point c