forces and elasticity

how to calculate extension

length with force applied -original length

what does it mean when something is inelastically formed

cannot go back to original size or shape after being stretched

hooke’s law equation

force applied=spring constant,k x extension

what is the spring constant equal to

the force per unit extension needed to extend the spring

what is the limit of proportionality

the point when the graph curves and linear turns into non-linear