Hooke’s Law Stops Working when the Force is Great Enough Flashcards
1
Q
What is there a limit to?
A
The force you can apply for Hooke’s Law to stay true
2
Q
What does the graph show?
A
The force against extension for a typical metal wire (see page 10)
3
Q
What does the first part of the graph shows?
A
Hooke’s Law being obeyed - there’s a straight-line relationship between force and extension
4
Q
What happens when the force becomes great enough?
A
The graph starts to curve
5
Q
What is the point marked E on the graph called?
A
The elastic limit
6
Q
What happens if you increase the force past the elastic limit?
A
The material will be permanently stretched
7
Q
What happens when all the force is removed?
A
The material will be longer than at the start
8
Q
What do some materials, like rubber, only obey Hooke’s law for?
A
Really small extensions
