15 terms

Mechanical Equilibrium

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Equilibrium
refers to condition of balance
Mechanical Equilibrium
are stable, without changes of motion
Force
a push or a pull
Net Force
the combination of all force acting on an object
Newton (N)
Standard scientific unit of force
Scalar
"how much" (magnitude)
Vector
a scalar with direction
Static Equilibrium
Objects at rest
Dynamic Equilibrium
objects moving at constant speed in a straight line path
Inertia
(Newtons first law) a measure of an objects laziness or reluctance to change what it is doing
Mass
is a measure of an objects inertia
Acceleration of gravity
9.8 m/s2 (meters per second squared)
Normal force (FN)
a force that acts perpendicular to the surface on which a object rests
Tension (FT)
force applied by a rope or a string
Friction (Ff)
a force acting parallel to two surfaces in contact. If an object moves, the friction force always acts opposite direction of motion