Recent content by shogun000

Yes sort of makes sense now! Thank you all!

at x=8 I'd say the shear force is negative R3. Edit: replaced R2 instead of R3.

Ahh! Negative R3 because the force R3 has to bring the shear to 0 at x=9.

I'd say the shear is positive R1 at x=1m.

I've attached my working out. Hope that clarifies things! Sorry about the orientation, I can't seem to rotate it.

I've attached the part of the solution, Macauly's notation is being used to formulate the equation of shear force.

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.

That brings me back to my initial problem, at x=9 Shear force=R2 But in the solutions it's: Shear force= -R2 I don't see why it's negative R2.

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.

1) I assumed the deflection at both ends is zero. But that doesn't mean the shear is zero? 2) The supports don't seem to provide any bending moment.

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 momentThe 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...