Teacher 
Distributor
- Loops on both ends of the spring
- Length from Loop to Loop: 4.5 in
- Length of Spring (without loops): 4 in
- Outer Diameter: 0.2270 in
- Inner Diameter: 0.1635 in
The sturdy, 4 inch extension spring provides the perfect tool for studying motion of mass on a spring, Hooke's Law, potential energy, etc. It provides a visually and kinesthetically effective method for studying the physics of springs.
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