Problem $4\mathrm{.}69$

The assembly has the diameters and material indicated. It fits securely between its fixed

supports when the temperature is $T_1=70F.$

$($Figure $1)$

Figure

Part A

Determine the average normal stress in the aluminum when the temperature reaches $T_2=120F.$

Express your answer in kilopounds per square inch to three significant figures.

Part B

Determine the average normal stress in the bronze when the temperature reaches $T_2=120F.$

Express your answer in kilopounds per square inch to three significant figures.

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Part C

Determine the average normal stress in the stainless steel when the temperature reaches $T_2=120F.$

Express your answer in kilopounds per square inch to three significant figures.

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