using a spring

[Mike Clasby]

Maybe these will give you some ideas.

Here are: Jack In The Box, Pendulum, Bouncing Ball, Jiggle and Squish and Squash, all springy actions.

https://www.motionscript.com/mastering-expressions/simulation-basics-3.html

https://www.motionscript.com/expressions-lab-ae65/jack-in-the-box.html

https://www.motionscript.com/expressions-lab-ae65/squash-and-stretch.html

And another source for springs here (and the next page):

https://jjgifford.com/expressions/geometry/frequency.html

[Julian Sixx]

Hi

…in addition to yikesmikes expression,you’ll find a lot more on your hd.Go to your AE7 app folder>Support Files>Templates>Expresion Samples.

my 0.02