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Tesis de Maestria Jackeline Rodríguez T..pdf - Saber UCV ...

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FfhA<br />

FfA<br />

A<br />

α<br />

FfvA<br />

Figura 5.4. Distribución <strong>de</strong> las fuerzas, caso B .<br />

La <strong>de</strong>scomposición <strong>de</strong> las fuerzas friccional y normal en A y B viene dada por las<br />

siguientes ecuaciones:<br />

Punto A:<br />

F<br />

Sen =<br />

F<br />

fvA<br />

( α )<br />

( )<br />

F<br />

Cos =<br />

F<br />

Igual para el punto B<br />

Punto B:<br />

FfA<br />

fA<br />

vA ( α )<br />

( )<br />

F<br />

Sen =<br />

F<br />

A<br />

F fhA<br />

Cos α =<br />

(Ec. 5.16)<br />

F<br />

F<br />

Sen =<br />

F<br />

fvB<br />

( α )<br />

( )<br />

fB<br />

fA<br />

hA α (Ec. 5.17)<br />

A<br />

F fhB<br />

Cos α =<br />

(Ec. 5.18)<br />

F<br />

fB<br />

C´<br />

A B<br />

FA<br />

FfB<br />

FB<br />

o<br />

X<br />

FvC´<br />

FvA<br />

A<br />

FA<br />

FhA<br />

α<br />

48

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