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Tarea sin resolver de Vibraciones
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Nombre de los alumnos Tecnológico Nacional de México Instituto Tecnológico de Veracruz
Unidad 2. Vibraci o´n libre de sistemas de 1 GDL Tarea 3 Ejercicio 3. 1 : Encuentre la masa efectiva del ensamble de balanc´ın mostrado en la Figura 1 con respecto a la coordenada x de la parte inferior. Resp. mef ect = a 2 b^2 m^1 +^ m^2 +^ J 0 b^2 Figura 1 Ejercicio 3. 2 : Determine la masa efectiva de la tobera del motor cohete mostrado en la Figura 2 que debe an˜adirse a la masa del actuador m 1. Resp. mef ect = m 1 + J 0 b^2 Figura 2 Ejercicio 3. 3 : Determine los valores de ζ y ωd para los siguientes sistemas viscosamente amortiguados. a) m = 10 kg, k = 1000 N/m, y c = 150 N·s/m Resp. ζ = 0. 75 , ωd = 6. 614 rad/s b) m = 10 kg, k = 1000 N/m, y c = 200 N·s/m Resp. ζ = 1 , ωd = 0 c) m = 10 kg, k = 1000 N/m, y c = 250 N·s/m Resp. ζ = 1. 25 , ωd = No existe p a´gina 1 de 2