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Part A The wide-flange beam is subjected to the P 54 kN force. Determine the principal stresses in the beam at point A located on the web at the bottom of the upper flange. Although it is not very accurate, use the shear formula to calculate the shear stress. (Figure 1) Determine the principal stress at point A Express your answer to three significant figures and include the appropriate units. MPa Figure 1 of 1 Request Answer Submit vious Answers XIncorrect; Try Again; 9 attempts remaining Part B Determine the principal stress ơ2 at point A Express your answer to three significant figures and include the appropriate units. 12 mm 250 mm 12 mm 10 mm 200 mm MPa

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