4 2004 1 termino 3 parcial.desbloqueado.pdf - ESCUELA...

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60º V o f ESCUELA SUPERIOR POLITECNICA DEL LITORAL INSTITUTO DE CIENCIAS FISICAS EXAMEN DE MEJORAMIENTO I TÉRMINO 2004 2005 Tema 1.- Cuál sería el periodo de revolución de un planeta del sistema solar que se encuentra a 5 800 millones de kilómetros del sol; sabiendo que la tierra está a 150 millones de kilómetros del sol años T T año T R R T T R R T T cR T cR T R T PS PS TS TS PS TS PS TS PS TS PS PS PS TS TS 240 150 5800 1 1 Kepler de ley Tercera 3 3 3 3 3 2 2 3 2 3 2 3 2 = ° ± ² ³ ´ µ = = = = = = α Tema 2.- Un cañón dispara un proyectil con una energía cinética inicial E o , y una inclinación de 60º sobre la horizontal. Cuál sería el incremento de energía potencial en el punto más elevado de la trayectoria del proyectil Tema 3.- Un cuerpo que se encuentra en estado de reposo comienza a girar con aceleración uniforme dando 3600 revoluciones durante los primeros dos minutos. Calcular la aceleración angular del cuerpo [ ] [ ] s rad s rad t t o / 14 . 3 / 14 . 3 14400 3600 * 4 ) 120 ( 2 1 2 * 3600 2 1 2 2 = = = = + = = α π α α π α ω θ ω α
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