stephen t. thornton jerry b. marion · stephen t. thornton jerry b. marion classical dynamics of...
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Stephen T. Thornton
Jerry B. Marion
Classical Dynamics ofParticles and systems
Thomson Bookscole
5ª. Edição (2004)
Notas de aula
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Sistema de referência
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Movimento em um sistema de referência não-inercial
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Movimento em um sistema de referência não-inercial
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dω/dt = -19.9±0,8 x 10-6 / século (600 anos atrás)
dω/dt = -10 x 10-6 / século (hoje)
ω = 7,3 x 10-6 rad/s d2R/dt2 = 3,4x10-2 m/s2
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The Coriolis Effect
• Due to moving on a rotating earth
• Things on equator are moving faster than points near poles
• Affects:– Winds– Ocean Currents– Tides
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The Coriolis Effect
• Things moving toward the equator are deflected west
• Things moving poleward are deflected east
• Counterclockwise in Northern Hemisphere
• Clockwise in Southern Hemisphere
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Força de Coriolis
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Força de Coriolis
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Correntes na atmosfera terrestre (ar)
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Correntes na atmosfera terrestre (ar)
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Correntes na atmosfera terrestre (ar)
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Força de Coriolis (efeitos nas correntes atmosféricas)
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Zona de Baixa pressão
(hemisfério sul)
azul: velocidade
vermelho: aceleração
preto: trajetória
Sentido horário
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Zona de Baixa pressão
(hemisfério norte)
azul: velocidade
vermelho: aceleração
preto: trajetória
Sentido anti-horário
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Hurricane Katrina as seen by MERIS in Reduced Resolution mode, off southern Florida on 25 August 2005, when it was still Category One on the Saffir-Simpson scale measuring hurricane intensity. The storm caused great damage after landfall, mostly due to heavy rainfall.
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Força de Coriolis (efeitos nas correntes marítimas)
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Correntes superficiais nos oceanos (água)
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Correntes superficiais nos oceanos (água)
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Correntes superficiais nos oceanos (água)
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Correntes superficiais nos oceanos (água)
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Correntes superficiais nos oceanos (água)
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Correntes superficiais nos oceanos (água)
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Força de Coriolis (efeito no movimento de um pênculo)
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No hemisfério Norte
•1.- Movimento do plano do pêndulo (sentido horário).
•2.- Deslocamento do plano de oscilação devida a rotação da Terra.
•3-. Movimento de rotação da Terra (sentido anti-horário).
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• Círculo horário
(polo norte)
Elipses horárias
• Plano (equador)
Elipses anti-horárias
• Círculo anti-horário
(polo sul)
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Água em um vaso sanitário ou pia NÃO é um efeito da força
de Coriolis!
• A escala de tamanho envolvida é muito pequena para que o efeito seja significativo !!!!
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Bart Simpsons versus Australia16th episode of The Simpsons' sixth season
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• Sistema de referência não-inercial:
http://www.phys.unsw.edu.au/einsteinlight/jw/module1_Inertial.htm
• Pêndulo de Focault:
http://www.phys.unsw.edu.au/PHYSICS_!/FOUCAULT_PENDULUM/foucault_pendulum.html
• Força de Coriolis:
http://www.phys.unsw.edu.au/%7Ejw/coriolis.html
• Erros conceituais comuns sobre a força de Coriolis:
http://www.ems.psu.edu/~fraser/Bad/BadCoriolis.html