Simple Springs (2009-Oct-16 0:20 EDT)

This is a simulation of a simple spring. One of its end points is attached to a moving platform.

Science

North America

by <> (2010-Sep-03 7:42 EDT)
Another classic. Shows how Etoys can demonstrate concepts with an immediate impact. Encourages exploration.

by <> (2010-Sep-03 7:42 EDT)
Nice simulation. Just changing the length of the spring's picture will give the streched or compressed spring's picture so that animation is easy. See the related project: http://www.squeakland.org/showcase/project.jsp?id=7691 Last example, oscillations.