Explain the shear or moment diagrams, Biology

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Explain the Shear or Moment Diagrams

Shear diagram changes by magnitude of the load.
Shear is constant along unloaded portions of a beam
For a point load, the shear function is constant. For a uniform load, the shear function is linear.
For a constant shear, the moment function is linear.
For a liner shear, the moment a second-degree curve.
The change in moment = area under the shear diagram
Max/min moment occurs at zero shear.

An applied moment at a given location has NO affect on the shear diagram-only the moment diagram.

Shear/moment diagrams

dV/dx = - w(x)

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