Apply a bending force $($F$)$ to a plastic beam with dimensions $251505m{m}^3($b $x$ length $x$ d$)$ placed on support legs of a $40mm$ distance $($L$),$ resulting in the ForceDeflection plot below.

$4\mathrm{.}1$ Calculate the modulus of rupture $($flexural strength$).$

$4\mathrm{.}2$ Calculate the flexural modulus of elasticity.