P10.8 Forces and elasticity Flashcards
1
Q
How can a shape of an object be changed?
A
By stretching - bending - twisting or compressing it
2
Q
What does it mean if something is elastic?
A
It goes back into its original shape when the forces deforming it are removed
3
Q
What is the extenstion?
A
The increase of length from the original is called the extension
4
Q
What is Hooke’s law?
A
The extension of a spring is directly proportional to the force applied - as long as its limit of proportionality is note exceeded
5
Q
What is the equation for Hooke’s law?
A
Force = spring constant x extension
6
Q
What is the spring constant?
A
The force per unit extension needed to extend the spring
