- #1

- 11

- 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 negative, since I took upwards as positive.

Help appreciated!