forces part two Flashcards
what three things to do with elasticity transfers energy ?
> stretching
compressing
bending
what happens when you apply a force to an object ?
> stretch
compress
bend
what do you need in order to stretch, compress or bend an object ? ii) what would happen if you didnt have this
> more than one force
> move applied force
what is done when a force stretches or compresses an object ? ii) where is the energy transffered? iii)how much of this energy is transffered for an elastically deformed object ?
> work is done
elastic potential energy store
elastically deformed object all too elastic potential energy store
what are the two types of deformation ?
- elastic deformation
2. inelastic deformation
what is elastic deformation ?
> elastically deformed go back original shape and length
whats the name of objects that can be elastically deformed and give an example.
> elastic objects
> spring
what is inelastic deformation ?
> inelastically deformed doesnt original shape and length
whats the relationship between force and extension ?
extension directly proportional force
what happens if a spring is supported at the top and a weight is attatched too the bottom ?
stretches
state the equation with units which links force extension and spring constant
F=Ke
> force ( N)
> extension (m)
> spring constant N/m
what does spring constant depend on ?
material > stiffer greater
what does the F=Ke equation also work for ?
compression
e difference natural compressed
what does it mean when the graph curves at the top ?
ii) what is this known as ?
> no longer
>limit of proportionality
what two other units can extension have ?
cm and mm
