$1\mathrm{.}3)$ Find the deflection at point $D($deflection at $D$:$A)$ of the beam in the figure below, given E $-2\mathrm{.}01$x$10$ kg$/$cm$.$ and $1-4050$ cm$.$ using the Virtual work Method $(1\mathrm{.}5+1\mathrm{.}5+1+1=5$ points$).$

Real structure analysis

$M1(x)=$

$M2(x)=$

$M3(x)=$

Virtual structure analysis

$ml(x)=$

$m2(x)=$

$m3(x)=$

Use Virtual work Method ${\displaystyle \underset{L}{\overset{\phantom{}}{}}}\frac{Mm}{EI}dx=$

$***$Deflective deflection at position D centimeters

Draw a deflection diagram $($elastic curve$).$

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