# P2 2.6: Stretching and squashing

All information was taken directly from the AQA revision guide with only the key points from P2 2.6.

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• Created by: JSpencer
• Created on: 27-02-16 22:41
What happens if you hang small weights from a spring?
It will stretch
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What is the increase in length from the original called?
The extension
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What happens when you remove small weights from a spring?
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What is an elastic object?
One that regains its original shape when the objects deforming it are removed.
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What happens if we plot a graph against force applied on the spring?
It will go through the origin, meaning it is directly proportional to the force applied.
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What happens if the line starts to curve?
We have exceed the limit of proportionality.
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What is Hooks law?
The extension of a spring is directly proportional to the force applied, provided its limit of proportionality is not exceed.
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What is Hooks law equation?
F = k x e
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What is 'F'? Units?
F is force applied in newtons.
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What is 'k'? Units?
Spring constant in Newtons per metre, N/m
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What is 'e'? Units?
Extension in metres.
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What happens the stiffer the spring?
The greater the spring constant.
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What happens when an elastic object is stretched?
Work is done and stored as elastic potential energy.
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What happens when the stretching force is removed?
The stored energy is released.
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## Other cards in this set

### Card 2

#### Front

What is the increase in length from the original called?

The extension

### Card 3

#### Front

What happens when you remove small weights from a spring?

### Card 4

#### Front

What is an elastic object?

### Card 5

#### Front

What happens if we plot a graph against force applied on the spring?