: Navedite aksiomu o dejstvu i protivdejstvu (III Njutnov zakon) i objasnite šta je to "sistem sila u ravnoteži".
[ A + B = 120 + 80 = 200 , \textN ]
Pre nego što krenemo sa zadacima, ponovimo ključne pojmove: statika zadaci za srednju skolu
: To solve a problem, Marko learned to "liberate" the body from its supports. If he had a ball resting on a steep plane, he had to draw the weight ( ) pulling down and the reaction ( NAcap N sub cap A ) of the surface pushing back at an angle. A Typical Challenge Marko was given a task: A beam of length is supported at points A and B. A force of is pushing down right in the middle. The Goal : Find the reactions at A and B. : Navedite aksiomu o dejstvu i protivdejstvu (III