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Examen Dinámica
4ºEso
Nombre:
Apellidos:
Fecha:
Curso:
1ºUna grua comienza a subir una carga de 5000 kg con una fuerza de 51000 N. Calcula la aceleración del sistema. Si tarda en subir la carga 3 s, calcula la velocidad y el espacio recorrido
2ºUn coche esta tomando una curva de 27m de radio a una velocidad angular de 7.35rpm. la masa del coche es de 870kg. Calcula la fuerza de rozamiento entre las ruedas del coche y la velocidad en km/h
3ºCalcula la aceleración del sistema sabiendo que el ángulo es de 25º, el peso de la caja 18kg ,el coeficiente de rozamiento es de 0.26
4ºDos coches que van en misma direccion y sentido opuesto, de masas 25kg y 30kg a 10m/s y 16m/s respectivamente , se chocan , y el de 30kg sale con una velocidad de 9m/s, ¿A cuanto sale el otro coche?
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Enviado por: Alonso Idioma: castellanoPaís: España