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en.wikipedia.org/wiki/Normal_force

In mechanics, the normal force F n {\displaystyle F_{n}\ } F_n\ is that component of the contact force that is perpendicular to the surface that an object contacts.

When two objects touch, they exert a force on each other.

Given that matter is mostly empty space, contact force is the electrons of all the atoms repelling each other (as they're both negative), which prevents solids from  ...

www.sparknotes.com/physics/dynamics/newtonapplications/section1.rhtml

A summary of The Normal Force in 's Applying Newton's Three Laws. Learn exactly what happened in this chapter, scene, or section of Applying Newton's Three ...

www.physicsclassroom.com/class/newtlaws/Lesson-2/Types-of-Forces

The normal force is the support force exerted upon an object that is in contact with another stable object. For example, if a book is resting upon a surface, then ...

www.wikihow.com/Find-Normal-Force

How to Find Normal Force. Normal force is the amount of force required to counteract the other forces in any given scenario. The best way to go about finding it ...