A 14 mm diameter rod of an experimental plastic is subjected to a tensile force of magnitude P 150 mm gage length and there is a decrease in diameter of 0.4 mm, determine the modulus of elasticity, Poisson's ratio, and the modulus of rigidity (a.k.a shear modulus) for the material. 4.2 kN. Knowing that the elongation is 7 mm over a

A rigid bar AB of length L = 1600 mm is hinged to a support at A and supported by two vertical wires attached at points C and D such that AC = 500mm and AD = 1200mm Both the wires have same cross sectional area of 16 mm² and made of the same material having Young's modulus of 200 GPa. The wire at C has a length of 400 mm and that at D has 800 mm. Determine the tensile stresses in the wires and downward displacement at point B of the bar when a load of 1 kN is suspended at B.