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DRUGI NJUTNOV ZAKON ord

Author: Zorka

2 additions to document , most recent over 8 years ago

When Why
Nov-05-16 važno je
Nov-05-16 Pogledaj

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DRUGI NJUTNOV ZAKON

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Ako na kuglu mase M delujemo silom F ona će se pokrenuti, dobivši ubrzanje a,i preći izvestan put.

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Ako se ponovi isti ogled, ali se deluje silom duplo većeg intenziteta (2*F), onda će kugla preći duplo veći put i dobiti duplo veće ubrzanje.

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Nov 5
Prof. Zorka Radovanovic Prof. Zorka Radovanovic (Nov 05 2016 9:56AM) : Ubrzanje more

Kada telo ima veće ubrzanje, kada na njega deluje sila F ili 2F

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Nov 5
Snežana Aleksić Snežana Aleksić (Nov 05 2016 10:40AM) : 2F [Edited] more

Telo će dobiti duplo veće ubrzanje ako se deluje silom 2F.

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Ubrzanje tela određene mase, srazmerno je intenzitetu sile koja na njega deluje.

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Ako se ponovi isti ogled ali sa dve kugle, jedna mase M, a druga mase 2*M. Ako na njih delujemo silom istog intenziteta, onda će kugla mase 2*M, preći duplo manje rastojanje i imati upola manje ubrzanje nego kugla mase M.

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Ubrzanja koja dobijaju tela različitih masa pod dejstvom jednakih sila obrnuto su srazmerna tim masama.

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Prof. Zorka Radovanovic Prof. Zorka Radovanovic (Nov 05 2016 10:02AM) : Ubrzanje more

Koje telo ima veće ubrzanje kada na njih deluju sile istog intenziteta, telo čija je masa M ili 2M?

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Snežana Aleksić Snežana Aleksić (Nov 07 2016 11:35AM) : M more

Telo čija je masa M imaće veće ubrzanje.

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Drugi Njutnov zakon ili zakon sile glasi:

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Ubrzanje koje pri kretanju dobija jedno telo srazmerno je intenzitetu sile koja na njega deluje, a obrnuto srazmerno masi tog tela.

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Prof. Zorka Radovanovic Prof. Zorka Radovanovic (Nov 05 2016 10:07AM) : Ubrzanje more

Ubrzanje je srazmerno (dopuni rečenicu)

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Snežana Aleksić Snežana Aleksić (Nov 05 2016 10:41AM) : * more

intezitetu sile koja na njega deluje.

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a=F/m

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Drugi Njutnov zakon, češće se piše u obliku:

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F=m*a

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Prof. Zorka Radovanovic Prof. Zorka Radovanovic (Nov 05 2016 10:10AM) : Sila more

Drugi Njutnov zakon se drugačije piše u kom obliku?

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Nov 7
Snežana Aleksić Snežana Aleksić (Nov 07 2016 11:36AM) : ovako more

F=m*a

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Picture

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Na osnovu date formule dobijamo sledeću vezu između odgovarajućih jedinica:

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N=kg*m/s2

DMU Timestamp: November 03, 2016 14:13

Added November 05, 2016 at 10:16am by Prof. Radovanovic
Title: važno je

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Prof. Zorka Radovanovic Prof. Zorka Radovanovic (Nov 05 2016 10:23AM) : Zapažanja more

Šta zaključujete sa date slike o pređenom putu tela u prvom drugom slučaju.

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Snežana Aleksić Snežana Aleksić (Nov 07 2016 11:54AM) : I more

Pređeni put zavisi od mase tela i sile koja na njega deluje.

DMU Timestamp: November 03, 2016 14:13

Added November 05, 2016 at 10:45am by Prof. Radovanovic
Title: Pogledaj

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Prof. Zorka Radovanovic Prof. Zorka Radovanovic (Nov 05 2016 10:47AM) : Nadam se da je sada još jasnije! more

Drugi Njutnov zakon povezuje koje fizičke veličine

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Snežana Aleksić Snežana Aleksić (Nov 07 2016 11:51AM) : Fma more

Silu, masu i ubrzanje.

DMU Timestamp: November 03, 2016 14:13

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