Equilibrium  
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Propped cantilevers

Solve the compatibility equation for By ...

Propped cantilevers

Now that By is known, equilibrium equations can be used to solve for the reactions Ay and MA. To find MA, write the equation Σ MA = 0:

To find Ay, write the equation Σ Fy = 0:

The deflected shape of the beam and the actual directions of the reactions are shown on the figure.