Change g, m, k, dampting, A, see x/t graph
http://mw.concord.org/nextgen/#interactives/physics/pendulums/spring-mass
Change g, m, k, dampting, A, see x/t graph
http://mw.concord.org/nextgen/#interactives/physics/pendulums/spring-mass
Change lengths, angles, see theta/t graph
http://mw.concord.org/nextgen/#interactives/physics/pendulums/double-pendulum
Drag pendulum to stor energy, see bar charts/graphs of damped motion
http://mw.concord.org/nextgen/#interactives/physics/energy-conservation/energy-pendulum
11 springs pulled down to different amplitudes
https://app.pivotinteractives.com/activities/58c095191c22bc00117d0cff/preview
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Change g, k, l, m, dampting see angle/ t for pendulum attached to spring
http://mw.concord.org/nextgen/#interactives/physics/pendulums/pendulum-spring
Change mass, k, see energy bar charts
http://www.physicsclassroom.com/Physics-Interactives/Work-and-Energy/Mass-on-a-Spring
Change k, m, A, g, see x /t graph, bar charts
See animations/videos to see links
http://www.animations.physics.unsw.edu.au/mechanics/chapter4_simpleharmonicmotion.html#4.1
Helen rates this resource as good
Hang masses on 3 springs, change k, m, planet, damping, see bar charts
https://phet.colorado.edu/sims/mass-spring-lab/mass-spring-lab_en.html
Helen rates this resource as good
SHM optical illusion