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Estática (Equilibrio de rotación) Flashcards

(7 cards)

1
Q

Momento

A

magnitud física que relaciona distancia con fuerza aplicada

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2
Q

Sistema de unidades: SI- CGS- MKgF

A

Newtonmetro
dina
cm
kgf*metro

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2
Q

Roldana(polea ideal)

A

Es toda polea de masa despreciable en la que no se considera el rozamiento. Normalmente es utilizada con un hilo flexible e inextensible.

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2
Q

Par de fuerzas o cupla

A

sistema formado por 2 fuerzas de igual valor pero direcciones opuestas
Rotación, resultante=0 , no puede ser reducido a una fuerza resultante
Sistema constituido por 2 fuerzas de la misma intensidad, igual dirección, sentidos contrarios y aplicados en puntos distintos

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2
Q

Palanca

A

es una barra que puede girar en torno de un punto de apoyo

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2
Q

Tres fuerzas que actúan en una palanca

A

fuerza motriz
fuerza resistente
reacción normal del apoyo

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3
Q

ofrece la polea fija una ventaja mecánica

A

no

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