An automobile engine with a mass of 360 kg is supported by an engine hoist, as shown. Beam ABC is made of a hollow square cross section, with the outer dimensions of 100 x 100-mm and wall thickness of 20 mm. 530 mm a 900 mm Ta 900 mm D 1270 mm B 16 Determine: a- The maximum tensile and compressive stresses on section a-a b- The maximum principal and shear 380 mm 1 1930 mm 510 mm stresses at mid- height of the cross section at section a-a (point F).