P2.3 - Forces In Action Flashcards
1
Q
What happens if a material is plastic?
A
They stretch but do not return to their original shape
2
Q
What happens if a material is elastic?
A
They stretch and return to their original shape
3
Q
What is the limit of proportionality?
A
The point at which force and extension do not have a linear relationship
4
Q
Until what point do force and extension have a linear relationship?
A
Limit of proportionality
5
Q
What is the elastic limit?
A
The point at which the material will not return to its original length if stretched
6
Q
What is Hooke’s Law and its formula?
A
The extension of a spring is proportional to the force until you reach the limit of proportionality
Force exerted by spring (N) =
spring constant (N/m) x extension (m)
