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3.3. Drugi Newtonov zakon<br />
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�<br />
Impuls (količina gibanja) p = m⋅ v [ kg m/s]<br />
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p =<br />
�<br />
m0 v<br />
2<br />
v<br />
1−<br />
2<br />
c<br />
II Newtonov zakon: sila je jednaka promjeni impulsa<br />
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�� � d ��<br />
m a ( m v)<br />
d p<br />
F = ⋅ = ⋅ =<br />
dt dt<br />
uz pretpostavku m = const<br />
2<br />
d r<br />
2<br />
dt<br />
≡ a =<br />
F<br />
m<br />
�<br />
�<br />
Temeljna jednadžba gibanja<br />
Rješavanje zadataka<br />
� ��<br />
m⋅ a = ∑ F<br />
i<br />
- vektorski zbroj sila (koordinatni<br />
sustav, komponente)
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