Find Bending Moment at x= 0.9m w/ SFD & BMD

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To find the bending moment at x=0.9m, one can typically read the value directly from the bending moment diagram (BMD) if it is accurately scaled. However, since the provided diagram is a sketch and not to scale, it complicates the process. The bending moment can also be calculated using the equation: moment = force x distance, necessitating the identification of the force at the specified point. Understanding the shape of the BMD, whether it is a straight line or a parabola, is crucial for determining break and zero points. Accurate calculations at other points can be made once these key points are established.
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how to find bending moment?
information given : distance= 0.9m
with SFD and BMD diagram...and the cross section
but the moment equation is not given...so how to find the bending moment at x= 0.9m?
 
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If you're given the bending moment diagram, it's just a case of going to 0.9m on the x-axis and reading off the corresponding bending moment.
 
the problem is...the graph is not in scale...
it is just a sketch.
 
Hmmmmm, well, the bending moment is force x distance so you need to find the force at the point of interest...can you post the full question?
 
it is just a sketch.

Of course it is. It is probably to help or test your understanding of BM diagrams.

Don't forget that the 'sketch' will be a straight line or a parabola and that you can locate exactly the break and zero points. Once you have these you can calculate what happens at other points.
 
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