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Resultant force
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- The forces simply cancel each other out, and the overall effect is just the same as if no force was acting on the object.The overall force acting on the object is called the resultant force.
www.bbc.co.uk/bitesize/articles/zwbqwnb
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Forces acting in opposite directions. In this diagram there are two forces, acting in opposite directions: Resultant force = 20 N – 10 N. Resultant force = 10 N to the left. Shortly after a...
- Forces, Pressure and Speed - BBC Bitesize
Pressure is a measure of how much force is acting upon an...
- Forces, Pressure and Speed - BBC Bitesize
Pressure is a measure of how much force is acting upon an area. Pressure can be found using the equation pressure = force / area. Therefore, a force acting over a smaller area will create...
The net (total) result is the force \(\vec{T}\). Similarly, when adhesive tape sticks to a piece of paper, the atoms of the tape are intermingled with those of the paper to cause a net electromagnetic force between the two objects.
The effect of all forces acting on a particular object can be represented by a single vector called the total force or the net force which is defined as the sum of all forces acting on that object: \[\vec F_{net}=\Sigma\vec F\]
Balanced forces are forces where the effect of one force is cancelled out by another. A tug of war, where each team is pulling equally on the rope, is an example of balanced forces.
The total force is equal to the magnitude of that vector. As a simple example, if you have $10N$ at $0^o$ and $10N$ at $45^o$ you get a resulting vector $\vec{F}$ whose components are $F_x = 17.07N$ and $F_y = 7.07N$. The Force is then $|\vec{F}| = 18.48N$.
Adding together all of the forces acting on an object gives the total force, or net force. An external force is a force that acts on an object within the system from outside the system. This type of force is different than an internal force, which acts between two objects that are both within the system.
