AQA GCSE Combined Science: Synergy · 8465

Energy Stored in Stretched Spring

What you need to know

Calculate the precise amount of elastic potential energy associated with a stretched spring.
Understand that physical elastic potential energy is directly stored within a stretched spring due to the work done on it.
Apply the standard equation to calculate stored energy, assuming the limit of proportionality has not been exceeded:

$E_e = \frac{1}{2} k e^2$

=

21ke2

Identify the correct units for elastic potential energy in joules, spring constant in newtons per metre, and extension in metres.
Calculate the exact amount of physical work done in stretching the spring using this energy formula.