f:\h\caida libre vertical
TRANSCRIPT
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PRESENTADO POR:
EUGENIA ILLESCAS
PAT “C”
2 010
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CAIDA LIBRE VERTICAL
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CAIDA LIBRE VERTICAL
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CAIDA LIBRE VERTICAL
g =9,8m/s²
+
-v v
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CAIDA LIBRE VERTICAL
signo de que la velocidad va aumentando hacia abajo.
+
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ECUACIONES PARA LA CAIDA LIBRE
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ECUACIONES PARA LA CAIDA LIBRE
e = ½·a·t²vf = a·tVf ² = Vo² +/ - g.h
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h = ½·g·t²vf =Vo+/- g·t
ECUACIONES PARA LA CAIDA LIBRE
H = La altura del hilo de la grúa…
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SUBIR EN CAIDA LIBRE
H
Vo
G = 10 m/s²
Vf
T
+ -
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EJEMPLO
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RESOLUCION
Vo = 30m/s
Vf = O m/s
G = 1,6 m/s².
h = vo·t + ½·g·t²
necesitamos saber el tiempo en el que se alcanzará la altura máxima:
vf = vo + g·t t = 12,5 s
Ya podemos calcular la altura: h = 30·12,5 + ½·1,6·12,5²
h = 125 m
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ALGO QUE SIEMPRE DEBES RECORDAR
=
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GRAFICOS
gráficas posición-tiempo