Download ModelDownload Sourceembed



1.2 Definitions, equations and graphs 

1.2.1 Definition of Simple Harmonic Motion (SHM):           LO (d)

A motion where the  acceleration a of an object is always directed towards a fixed point ( the equilibrium position O ) and proportional to its displacement x from the fixed point is said to be  be simple harmonic. 

        Defining equation of SHM

a =  - ω2 x

Observe from the model or the animation, suggest the reason for the negative sign.

The negative sign means a is always directed towards the equilibrium point while x is pointing away from equilibrium point O.

In other words a and x are in the opposite direction.                                  Model:

  1. Run Sim


Code Language Translator Run

Software Requirements


Android iOS Windows MacOS
with best with Chrome Chrome Chrome Chrome
support full-screen? Yes. Chrome/Opera No. Firefox/ Samsung Internet Not yet Yes Yes
cannot work on some mobile browser that don't understand JavaScript such as.....
cannot work on Internet Explorer 9 and below



This email address is being protected from spambots. You need JavaScript enabled to view it.; Francisco Esquembre

end faq


Cover art

Other Resources

  1. Simple Harmonic Motion Tutorial by ukukuku

end faq

Testimonials (0)

There are no testimonials available for viewing. Login to deploy the article and be the first to submit your review!

Submit your review

Please deploy the article before submitting your review!

You have to login first to see this stats.

3.875 1 1 1 1 1 1 1 1 1 1 Rating 3.88 (4 Votes)

Article Stats

Article ID: 75
Article Category ID: 25
Deployed Users
Total # of Likes
Total # of Dislikes
Total # of Deployment 0
  • Oscillations
  • Junior College
  • Arts
  • EasyJavaScriptSimulation
  • Android/iOS including handphones/Tablets/iPads
  • Windows/MacOSX/Linux including Laptops/Desktops
  • ChromeBook Laptops
  • Science
  • Simulations