The $60$ strain rosette is mounted on a beam. The following readings are

obtained from each gage: $lo{n}_a=-500({10}^{-6}),lo{n}_b=250({10}^{-6}),$

$lo{n}_c=400({10}^{-6})($Figure $1)$

Part A

Determine the in$-$plane principal strains. Express your answers using three significant figures separated by a comma. $lo{n}_1,lo{n}_2=$

Part B

Determine the orientation of the element for principal strain. Express your answers in degrees to three significant figures separated by a comma. Enter a positive value for counterclockwise angle and a negative value for clockwise angle.

Part C

Determine the maximum in$-$plane shear strain. Express your answer using three significant figures.

Part D

Determine the orientation of the element for maximum shear strain. Express your answer in degrees to three significant figures. Enter a positive value for counterclockwise angle and a negative value for clockwise angle.

${}_{s_1}=$

Part E

Determine the associated average normal strain. Express your answer using three significant figures. ${}_{\text{m}\text{a}\text{x}in-\text{p}\text{l}\text{a}\text{n}\text{e}}=$