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a push or a pull exerted on an object

Net Force

the overall force on an object when all the individual forces acting on an object are added together.


a quantity with magnitude and direction.

Vector Quantity

quantity that needs to have both amount and direction defined

Scalar Quantity

a quantity that has mangutude but no derection

Mechanical Equilibrium

the state of an object or system of objects for which any impressed forces cancel to zero and no acceleration occurs

Equilibrium Rule

for any body in mechanical equilibrium the vector sum of the forces on it are zero, {F=0

Support Force

Upward force that balances gravity. (also known as normal force)


a vector that is the sum of two or more other vectors

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