Energy in the Elastic Potential Energy Store of an object is defined as:
The Energy Stored in an Elastic object when Work is Done on the object.
What happens to the EPE Store of a Spring when it is Stretched/ Compressed?
Work is Done on it, which results in Energy being Transferred to the EPE Store.
What happens to the EPE Store of a Spring when it is Released?
Energy is Transferred away from its EPE Store.
EPE = …
Spring Constant X Extension^2 /2
What is the ‘Spring Constant’?
The stiffness of the Spring.
Force = …
Spring Constant X Extension
How do you work out the Extension of a Spring?
New Length - Original Length.