Difference between revisions of "Elastic Potential Energy Store"
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| style="height:20px; width:200px; text-align:center;" |A stretched bow stores '''elastic potential energy.''' The further it is stretched the more [[energy]] it stores. | | style="height:20px; width:200px; text-align:center;" |A stretched bow stores '''elastic potential energy.''' The further it is stretched the more [[energy]] it stores. | ||
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| + | ==Key Stage 4== | ||
| + | ===Meaning=== | ||
| + | The '''elastic potential energy store''' is an [[Energy Store|energy store]] associated with stretched, squashed and twisted elastic [[object]]s. | ||
| + | |||
| + | ===About Elastic Potential Energy=== | ||
| + | : Any [[object]] that returns to its original shape after a [[Deformation|deforming]] [[force]] has been removed is able to store '''elastic potential energy'''. | ||
| + | : '''Elastic potential energy''' is a [[Potential Energy]] store. | ||
| + | : The '''elastic potential energy store''' of an [[object]] is related to two [[property|properties]] of the [[object]]: | ||
| + | *The [[Spring Constant]] of the [[object]]. - The amount of [[force]] needed to stretch or squash it's shape by a given distance. The greater the [[Spring Constant|spring constant]] the greater the '''elastic potential energy''' stored. | ||
| + | *The [[Extension (Physics)|extension]] of the [[object]]. - The distance that the [[object]] has been stretched or squashed. The greater the [[Extension (Physics)|extension]] the greater the '''elastic potential energy''' stored. | ||
| + | |||
| + | ===Equation=== | ||
| + | ''NB: You will be given this equation in the formula sheet.'' | ||
| + | |||
| + | '' '''Elastic Potential Energy''' = 0.5 x (Spring Constant) x (Extension)<sup>2</sup>'' | ||
| + | |||
| + | <math>E_e = \frac{1}{2} k x^2</math> | ||
| + | |||
| + | Where: | ||
| + | |||
| + | E<sub>e</sub> = '''Elastic Potential Energy''' stored. | ||
| + | |||
| + | k = The [[Spring Constant|spring constant]] of the [[object]]. | ||
| + | |||
| + | x = The [[Extension (Physics)|extension]] of the [[object]]. | ||
Revision as of 10:52, 31 January 2019
Contents
Key Stage 3
Meaning
The elastic potential energy store is an energy store associated with stretched, squashed and twisted elastic objects.
About Elastic Potential Energy
Examples
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| Rubber bands can store elastic potential energy when they are stretched. | A spring stores energy in the elastic potential store when they are stretched, squashed and bent. | A stretched bow stores elastic potential energy. The further it is stretched the more energy it stores. |
Key Stage 4
Meaning
The elastic potential energy store is an energy store associated with stretched, squashed and twisted elastic objects.
About Elastic Potential Energy
- Any object that returns to its original shape after a deforming force has been removed is able to store elastic potential energy.
- Elastic potential energy is a Potential Energy store.
- The elastic potential energy store of an object is related to two properties of the object:
- The Spring Constant of the object. - The amount of force needed to stretch or squash it's shape by a given distance. The greater the spring constant the greater the elastic potential energy stored.
- The extension of the object. - The distance that the object has been stretched or squashed. The greater the extension the greater the elastic potential energy stored.
Equation
NB: You will be given this equation in the formula sheet.
Elastic Potential Energy = 0.5 x (Spring Constant) x (Extension)2
\(E_e = \frac{1}{2} k x^2\)
Where:
Ee = Elastic Potential Energy stored.
k = The spring constant of the object.