Springs Flashcards
What doe Hooke’s law state?
That the extension is proportional to the force applied provided the limit of proportionality is not exceeded.
What doe the Force equal?
F=kx where k=spring constant (Nm^-1) and x=extension (m).
On a Force-extension graph, what does the gradient represent?
The spring constant
What is F directly proportional to?
x
What does the extension equal?
the final length of spring - the original length
What is the force constant like for a stiff spring?
The force constant is large.
The larger the force constant……..
the smaller the extension.
What is elastic deformation?
It is a change in the shape of a material that is irreversible.
What will return material to its original shape and size?
The removal of a tensile or compressive force.
What is stiffness?
The extent to which an object deforms under stress.
What happens when spring is stretched?
It will store energy
What does the area under a force extension graph equal?
The energy stored.
What is the equation for elastic potential energy? (2)
Ep=1/2Fx or Ep=1/2Kx^2.
What does work on a spring?
The force applied.
For two spring in parallel what is the equation?
KT = K1 + K2…..
