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06 - Rotacija krutog tijela

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6.5. Moment količine gibanja<br />

Jednadžba gibanja za rotaciju <strong>krutog</strong> <strong>tijela</strong><br />

<br />

M<br />

=<br />

⎛ <br />

⎜ F =<br />

⎝<br />

<br />

d L<br />

dt<br />

<br />

d p ⎞<br />

⎟<br />

dt ⎠<br />

Ukupni moment vanjskih sila (obzirom na točku O)<br />

jednak je vremenskoj promjeni ukupnog zakretnog<br />

impulsa (obzirom na istu točku O).<br />

L<br />

M<br />

M<br />

F<br />

z<br />

z<br />

z<br />

=<br />

I ω<br />

z<br />

dL<br />

dt<br />

= I ⋅α<br />

z<br />

= =<br />

z<br />

= m⋅<br />

a<br />

( )<br />

d<br />

dt<br />

I<br />

( )<br />

z<br />

ω

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