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Exam (elaborations)

preguntas de examen fisica

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preguntas de examen fisica

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February 4, 2024
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Written in
2023/2024
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EJERCICIOS DE EXAMEN FUNDAMENTOS DE FÍSICA (DINÁMICA y FUERZAS)



1) Un objeto de masa 1kg está sobre una superficie que gira con W=5t. El objeto se
mueve sujeto a un muelle cuya l0=0.1m, y k=10 N/m. Sabiendo que al cabo de 2s la
longitud del muelle es 0.5m, y que el objeto permanece estacionario respecto a la
plataforma, halla la fuerza de rozamiento que recibe el objeto.



(Pista: El rozamiento se debe descomponer en eje X y eje Y)




2) Tenemos un hilo de longitud L (muy grande) y una masa M fija en una región del
espacio. Utilizando Gauss halla el campo gravitatorio en una distancia h. Si ahora
colocamos en ese punto una partícula de masa m, hallar la velocidad con la que
chocará con el hilo.
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