A horizontal bar is attached to a wall. When a force of $1kN$ is applied at point $A($Figure $1),$ the deflection at point $A$ is ${}_{AA}=0\mathrm{.}49mm.$ When a $1kN$ force is applied at point $B($Figure $2),$ the deflection at point $A$ is ${}_{AB}=0\mathrm{.}23mm.($A given deformation due to a unit load is known as a flexibility factor.$)$

Part A $-$ Larger load

What is the change in the length of the bar if there is a single load of $5\mathrm{.}6kN$ applied to the right at point $A?$ Use a positive value to indicate an increase in length:

Express your answer in $mm$ to three significant figures.

$L=mm$

Part B $-$ Combined loads Express your answer in $mm$ to three significant figures.

Figure

$1$ of $2$

Figure

$2$ of $2$

A horizontal bar is attached to a wall. When a force of $1kN$ is applied at point $A($Figure $1),$ the deflection at point $A$ is ${}_{AA}=0\mathrm{.}49mm.$ When a $1kN$ force is applied at point $B($ Figure $2),$ the deflection at point $A$ is ${}_{AB}=0\mathrm{.}23mm.($A given deformation due to a unit load is known as a flexibility factor.$)$

$L=$

$mm$

Part C $-$ Required load

If a load of $6kN$ is applied to the right at point $B,$ then what load magnitude must be applied to the left at point $A$ to make the length of the bar remain unchanged?

Express your answer in $kN$ to three significant figures.

$F_A=$

$kN$