By David Torgesen. [1] Wikipedia contributors. "Pneumatic artificial muscles." Wikipedia, The Free Encyclopedia. Wikipedia, The Free Encyclopedia, 3 Feb.
3.1 Spring Scales. Weight vs. Mass Springs Scales New ideas for today .
4.5 Elastic potential energy and Simple Harmonic Motion (SHM)
![By David Torgesen. [1] Wikipedia contributors. "Pneumatic artificial muscles." Wikipedia, The Free Encyclopedia. Wikipedia, The Free Encyclopedia, 3 Feb.](https://static.fdocuments.us/doc/330x215/5519c0e055034660578b4b80/by-david-torgesen-1-wikipedia-contributors-pneumatic-artificial-muscles-wikipedia-the-free-encyclopedia-wikipedia-the-free-encyclopedia-3-feb.jpg)
