Structures - Outcome 1 - Forces and Moments

We need to be able to work out beam reactions with simple (pivots), roller (straight up) and hinge reactions.  We can use moments in the same way as we have been previously for simple supports and rollers, however hinges will have a reaction equal and opposite to all of the horizontal and vertical forces acting on the beam.

Here is an example:

Here is a more challenging example of using moments and forces at an angle. We did this today on the board.

Homework 7 on moments and forces is due on 21/1/11