Bending diagram, answers don't match book

[togo]

Homework Statement

Homework Equations

moment = force x distance

The Attempt at a Solution

on sheet.

According to the book, the max moment is 5.6 kN (at a distance of 2.4 m from point A), which was my calculation before adding the force at A (.8 kN upward)

whats wrong?

 

[PhanthomJay]

When you summed moments about point A = 0, you calculated the moment of the distributed load as (8 kN)(4m) = 32 kN-m, but the moment arm (perpendicular distance) of the resultant of the distributed load is not 4m (the resultant of the distributed load acts at its center of gravity).

 

[HyperSniper]

Could you post the original question? The general shape of your graph looks right, but I'm not certain what the value of that distributed load is suppose to be.

 

[togo]

the value of the distributed load is 2 kN per meter

 

[togo]

wow. You're right phantom, was a basic error on that one.