1.) A long flat steel bar 6 in. wide and 3/8 in. thick has a 2.5 in. diameter circular hole centrally located. If the allowable tensile stress for the steel is 38 ksi, calculate the tensile load that may be applied to the bar.

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A long, flat steel bar 6 in. wide and 3/8 in. thick has a circular hole 2 in. in diameter, centrally located.  The allowable tensile stress for the steel is 22,000 psi. Be aware of the existance of stress concentration, calculate the maximum axial tensile load that my be applied to the bar: ____  lb. Calculation your answer to 1 decimal place.

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3. A rectangular solid bar of width 20mm and depth 35mm is subject to a pure positive moment of 450Nm. Calculate the stress in the bar and sketch the stress distribution through its thickness along the centre line. 4. The bar in Q3 is also subject to a tensile load of 15kN applied at the centroid of area. Calculate the stress in the bar and sketch the stress distribution through its thickness along the centre line.

Hi could i please have the workings out, formulas and answer to the attached question.   Thanks.