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3.10. Centripetalna sila<br />
radijalna (centripetalna) akceleracija<br />
�<br />
Δv v ⋅ Δφ Δφ<br />
ar = lim = lim = v lim<br />
Δt→0 Δt Δt→0 Δt Δt→0 Δt<br />
dφ<br />
ar = v ⋅ = v ⋅ω<br />
dt<br />
2<br />
2 v<br />
ar = rω<br />
=<br />
r<br />
��� �� �<br />
a = ω × v<br />
r<br />
analogija translacijskog i<br />
rotacijskog gibanja<br />
s<br />
v<br />
a<br />
=<br />
=<br />
=<br />
r<br />
r<br />
r<br />
⋅<br />
⋅<br />
ϕ<br />
⋅<br />
ω<br />
α
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