How to Calculate the Bending of a Bar's Free End?

[Firben]

Homework Statement

Hello, i have problem with the following:
Determine the bending of the free end of an adjacent bar. The bar have flexural rigidity EI

Picture:
http://s716.photobucket.com/user/Pitoraq/media/Kon2_zps02951d5f.png.html?sort=3&o=0

Homework Equations

q = -dt/dx = -d^2M/dx^2 = d^2/dx^2(EI*d^2w/dx^2)

The Attempt at a Solution

x = 0; w = 0, d2/dx = 0
x = l, T=0, M=M0

I integrated 4 times and putted in those initialvalues but it didn't get my the correct answer.

The answer should be w = PL^3/(3EI)

 

[SteamKing]

Well, we can't say what went wrong without seeing your work. By the way, did you use your boundary conditions to determine the constants of integration when you did your calculations?