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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

DRUGI NJUTNOV ZAKON

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

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.

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

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.

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

Drugi Njutnov zakon ili zakon sile glasi:

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

a=F/m

Drugi Njutnov zakon, češće se piše u obliku:

F=m*a

Picture

Na osnovu date formule dobijamo sledeću vezu između odgovarajućih jedinica:

N=kg*m/s2

DMU Timestamp: November 03, 2016 14:13

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

DMU Timestamp: November 03, 2016 14:13

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

DMU Timestamp: November 03, 2016 14:13





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