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Informe - Elasticidad por flexión - práctica 2
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Informe - Elasticidad por flexión - práctica 2
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PRÁCTICA 2:Elasticidad por flexión
Cynthia Romero y Manuel Lara, Grupo BL 2
1.0. Objetivos:
➢ Estudio de la flexión producida en una barra en función de sus
dimensiones.
➢ Determinación del módulo de Young de diferentes materiales.
1. Dimensiones y masas de la varilla. Valor de la densidad de cada
material a partir de los valores de masa y volumen:
Tabla de madera:
Masa del plato: 24.82 ± 0.01g
L =100.2 cm =1002 mm ± 1
m = 62.60g ± 0.01
b = 20.08 ± 0.05 mm
d = 0.54 cm = 5.40 ֧ׅ± 0.05 mm
L´ = 97.2 cm = 972 ± 1 mm
S= F x K ; F=mxg
m (± 0.01g) S (±1mm) S (±1mm) S (±1mm)
9.95 6 8 7
14.95 16 18 17
29.91 29 31 30
39.88 40 44 42
49.84 51 55 53
59.81 67 68 67.5
69.77 88 84 86
74.64 98 100 99
84.64 110 109 109.5
99.72 121 122 121.5
, 2. Gráficas de s=f(m), y ecuación de las rectas resultantes ajustadas por
mínimos cuadrados para cada varilla.
3. Valores del módulo de Young (con su error) del material que forma
cada una de las varillas. Comparación con valores tabulados
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