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A prismatic bar of circular cross section is loaded by tensile forces P (see figure lc). T alloy with modulus of elasticity E-75GPa and Poissons ratio u 1/3. If the bar elongates by 3.6mm, what is the decrease in diameter d? What is the magnitude of the load P? he bar has length L- 1.5m and diameter d 30mm. It is made of aluminum [5 marks Figure ie L
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