Net force
From Wikipedia, the free encyclopedia
- This article is about forces in physics. For the Tom Clancy sci-fi novel, see Tom Clancy's Net Force
A net force (also known as a resultant force) is a vector produced when two or more forces act upon a single object. It is calculated by adding the force vectors acting upon the object. A net force can also be defined as the overall force acting on an object, when all the individual forces acting on the object are added together.
- When force A and force B act on an object in the same direction (parallel vectors), the net force (C) is equal to A + B, in the direction that both A and B point.
- When force A and force B act on an object in opposite directions (180 degrees between then - anti-parallel vectors), the net force (C) is equal to |A - B|, in the direction of whichever one has greater absolute value ("greater magnitude").
- When the angle between them (the forces) is anything else, then the individual components must be added up using sine and cosine.
(Note: The illustration assumes that the object, in this case a square, has no center of mass and can be treated like a point.)
