Free Body Diagrams/Forces GO Body diagrams /

Free Body/Vector Diagram & Forces

Free Body Diagram

Free-body diagrams are used to show the relative magnitude and direction of all forces acting on an object.













This diagram shows four forces acting upon an object. There aren’t always four forces.


Gravity (Fgrav)

All objects upon earth experience a force of gravity that is directed "downward" towards the center of the earth. 



Normal (Fnorm)

Normal Force is the support force exerted upon an object that is in contact with another stable object.



Friction (Ffric)

the force exerted by a surface as an object moves across it or makes an effort to move across it; opposes motion



Applied Force (Fapp)

An applied force is a force that is applied to an object by a person or another object.



Tension (Ftens)


the force that is transmitted through a string, rope, cable or wire when it is pulled tight by forces acting from opposite ends. It pulls equally on the objects on the opposite ends of the wire.


Air (Fair)

air resistance is a special type of frictional force that acts upon objects as they travel through the air. The force of air resistance is often observed to oppose the motion of an object.