Calculating the energy of springs (E = 1/2 kx²)
Lesson 12 / 41
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I can calculate the energy a spring has because it is stretched.
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Doubling the stiffness of a spring doubles the energy it has because it is stretched.
The spring constant is measured in newtons per metre (N/m).
Doubling the extension of a spring increases the energy it has, because it is stretched, by four times.
The energy a spring has because it is stretched equals 1/2 × spring constant × (extension)².
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