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The bending moment and shear forces vary along the beam length and are often represented diagramatically.

These internal forces may vary along the length of the beam and are usually represented as separate bending moment and shear force diagrams.

The calculation of bending moments and shear forces is traditionally part of structural analysis and is beyond the scope of this unit.



Don't know how mathy you are, but this can get real hairy. There should already be some free trailer plans out there with all the engineering already done. I seen to remember something called finite element analysis that used a Kray or something to do the number crunching, but that was a while ago. Probably do it on your phone now...

Not responsible for advice not taken...