QUESTION 1 a) For the states of stress shown in Figure Q1 (a), draw the Mohr's circle and find the absolute maximum shear stress. (2 marks) 10 MPa 10 MPa Figure Q1 (a) b) A solid circular bar of diameter d= 30 mm is subjected to an axial force, P and a torque, T (see Figure Q1 (b). Strain gauges A and B mounted on the surface of the bar is attached at point C, give a reading of 100 x 106 and a = -55 x 10%. The bar made of steel having E = 200 GPa and v=0.29. (8mark) i. Determine the axial force, P and torque, T. ii. Determine the maximum in-plane shear strain, max iii. Determine the maximum in-plane shear stress, Tmax in the bar. B 45 A Figure Q1 (b) T P