Forces and matter : Springs Flashcards
What do deforming forces do?
Change the size or shape of an object
What forces stretch?
Tensile forces
What forces squash an object?
Compressive forces
What forces bend an object?
Bending forces
What forces twist an object?
Torsional forces
Elastic materials
They regain original shape and size after deforming forces are removed
Plastic materials
Do not regain original shape and size after deforming forces are removed
Hooke’s law
The extension of a spring is directly proportional to the load applied to it, provided the limit of proportionality is not reached
Hooke’s law as an equation
F = kx
Where F is force, k is the spring constant and x is extension
How do you find the extension?
New length - original length
L - Lo
Unit for spring constant
N/m
What is the limit of proportionality?
The point beyond which the extension of a spring is no longer proportional to the load producing it.
