- #1

DevonZA

- 181

- 6

## Homework Statement

## Homework Equations

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Shear force is calculated at each point on the beam. Downward forces are negative, upward forces are positive.

Moments about points are calculated as force multiplied by perpendicular distance. Clockwise moments are negative. Anti clockwise moments are positive.

## The Attempt at a Solution

SF @ A = -6kN

SF @ B = -4kN

SF @ C = 12kN

SF @ D = 12kN (same as C)

BM@A=0

BM@B=6kNx1+12kNx0.5 = 12kN CCW

BM@C=6kNx1.5+4kNx0.5=11kN CCW

BM@D=6kNx3+4kNx2-12kNx1.5=8kN CCW

Answers given are:

Vmax= -10kN (I can see this from the shear force diagram)

Mmax = -11kN.m (point c?)

Points of contra-flexure = C (not sure how this is calculated)