Question

Which form of energy increases when a spring is compressed?

Answer 1

: The potential energy when a spring is compressed increases. When you stretch or compress a spring you work against the restoring force of the spring. This work is stored as elastic potential energy in the spring. The potential energy increase with the displacement from equilibrium position of the spring

Step-by-step explanation:

Answer 2

Elastic potential energy because springs have elasticity(the ability of an object or material to resume its normal shape after being stretched or compressed; stretchiness).
Examples
1. Rubber bands
2. springs like slinky s