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Homework Statement
Homework Equations
For small deflections:
[tex]M=EI \frac{d^2y}{dx^2}[/tex]
The Attempt at a Solution
To solve a problem like this, I think I was told I need to study the deflection and displacement of the beam.
If I said that the deflection at points x=0 and x=3L have to be 0 then I have two boundary conditions. Would that be enough to solve it? When I integrate twice, I will have Cx + D. Which I can find by setting x=0 to get D and x=3L to get C. But I am not being able to form an equation for the moment.
So far I have:
[tex]M(x) = R_B(3L-x) - W(4L-x)[/tex]
but it doesn't look right. If x = 3L then the moment is -W(4L-x) which is fine. But if x = 4L I get moment = -[tex]R_B[/tex]L which doesn't look right. What should I do?
How would I then go on to get the reaction at B [tex]R_B[/tex]
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