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Sile presjeka - Unutarnje sile

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P<br />

M<br />

=<br />

=<br />

n ≡<br />

N ⋅i<br />

+<br />

M<br />

x<br />

t<br />

T<br />

y<br />

⋅i<br />

+<br />

⋅<br />

M<br />

j+<br />

y<br />

⋅<br />

T<br />

z<br />

j+<br />

⋅ k<br />

M<br />

z<br />

( N)<br />

⋅k<br />

( Nm)<br />

Normalna sila N<br />

Popre ne <strong>sile</strong> T y i T z<br />

Moment uvijanja (torzije) M t<br />

Momenti savijanja M y i M z<br />

13

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