Learning Goal:

To solve for forces in slatically indeterminate bars with axial loads

When the number of reaction forces is greater than the number of equilibrium equations, the system is statically indeterminate. Solving for the reaction requires some addifonal equations. These additional equations come from considering compatibility relationships $($ie continuity of displacements and retationships behveen displacements and loads$)$

For an axially loaded member, the compatibility relationship for the deffections can be written by setting the lotal relative axial displacement behwee the ends of the member to a known value. The another equation for the deflections. Once the internal normal force of each segment is written in terms of the end reactions and applied loads, ther is enough information to solve for the reactions Express your answer with appropriate units to three significant figures.

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Part B $-$ Reaction with a known load Express your answer with appropriate units to three significant figures.

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Part C $-$ Load point for equal forces

Consider the structure from Part $B($Egure $2).$ What value of $x$ will lead to equal reaction forces at A and $B?$

Express your answer in feet to three significant figures.

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