1. Spring is able to work when it has higher potential energy.
2. The energy turns into kinetic energy.
3. Distance the spring is deformed and the spring constant.
4. By calculating the amount of force required to stretch or compress it by one meter.
A spring is an object that can both extend and contract and return to its original shape. Elastic potential energy is the type of potential energy that's stored as a result of applying a force that deforms a spring-like object.
Spring is able to work when more force is applied to it. More applied force means more elastic potential energy stored in it. When the force is released, the decreasing potential energy is converted into kinetic energy (basically because the string's body moves during the potential energy release).
In order to determine how much sprint potential energy there used to be (before it decreased), one must know the spring constant first and how far the spring deformed. Spring constant (k) is the amount of force required to stretch or compress it by one meter.
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