Calculate the moment and the sag

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Mathijsgri
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The bridge is full extend 35 meters long, and retracted 17,5 meter long.
When the bridge is installed it rest on piont(375kN) and a
hydraulic pomp (525kN) , the mass of the bridge is 15 metric ton.

my question is how do I calculate the bending moment diagrams when it is extending and how do i calculate the bending when it is at 35 meters.
 
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  • Free-body diagram of a beam with a pin support at the left end, an upward reaction of 525kN and a downward load of 375kN at the left, a downward load of 150kN near the right end, and a 35 m span dimension below.
    Schermafbeelding 2016-11-11 om 09.40.26.png
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