What is the Normal Force (FN)?
The common meanings of the word "normal" do not apply. In the case of the Normal Force what is actually being described is geometry.
|If two lines are at right angles to each other, we call them perpendicular.|
|If two surfaces are at right angles to each other, we call them orthogonal.|
|If a surface and a line are at right angles to each other, we say the line
is normal. So any line that is at a right angle to the surface is
called a normal line.
If there is a force coming from the surface and at a right angle to the surface then we call it a Normal line.
Any force coming from the surface and acting at a right angle to the surface is called the Normal Force.
|When an object is sitting on a level surface then the normal force is always equal and opposite of the weight of the object.|
|On an inclined surface notice that...
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