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4) Sobre una barra cilindrica de aluminio de diametro de 12.7 mm se realiza una prueba de tension, cuando la carga axial P llega a

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4) Sobre una barra cilindrica de aluminio de diametro de 12.7 mm se realiza una prueba de tension, cuando la carga axial P llega a un valor de 25000 N la distancia (longitud calibrada L = 150 mm) entre 2 marcas de calibracion se incrementa (AL) 0.25 mm, calcule: el valor del modulo de elasticidad del material (E), el valor de la relacion de Poisson (v) si el diametro disminuye 0.007 mm. (Ad)

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