The curved bar used on a machine has a rectangular cross section.

$($Figure $1)$

Figure

$1$ of $1$

Part A

If the bar is subjected to a PP $=110$ NN couple as shown, determine the maximum tensile stress acting at section a$-$aa$-$a$.$

Express your answer to$$three significant figures and include the appropriate units.

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$($max$)$t$($max$)$t $=$

$0\mathrm{.}978$MPa

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Part B

Determine the maximum compressive stress acting at section a$-$aa$-$a$.$

Express your answer to$$three significant figures and include the appropriate units.

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$($max$)$c$($max$)$c $=$