Sorry my bad!
I meant:
at x=9 Shear force=R3
But in the solutions it's: Shear force= -R3
I don't see why it's negative R3.
I already have the values of R2 and R3 from the question. It's just a matter of determining the shear force at the extremes of the beam.
From what I understood in lectures, the shear force at the ends of the beam has to be equal to the reaction force going through the beam given that they are point loads.
The bending moment at each end is 0.
Homework Statement
I'm trying to find the boundary conditions for the beam shown in the figure.
Homework Equations
Notation:
V= Shear force
M= Bending moment
The Attempt at a Solution
at x=0 V=R1, M=0
at x=9 V=R3, M=0
In the solution provided at x=9 V=-R2. I don't understand why it's...