This interactive simulation models the motion of a simple pendulum. Users can …
This interactive simulation models the motion of a simple pendulum. Users can explore how pendulum motion is affected by changing length of the string, initial angle, and mass of the bob. Adjust the acceleration due to gravity to simulate pendulum motion on another planet. Energy bar graphs can be displayed in stepped motion alongside the swinging pendulum to get a clear picture of kinetic/potential energy conversion. Click on "Forces" to see free body diagrams. Advanced learners can view graphs of angular position, angular velocity, and angular acceleration as well. The model is simple enough for middle school students to manipulate, yet also provides an array of robust tools that render it appropriate for introductory physics courses. See Related Materials for a multi-day module on simple harmonic motion (Science NetLinks) and for instructions on installing and running the cost-free EJS Modeling and Authoring Tool. This applet was created with EJS, Easy Java Simulations, a modeling tool that allows users without formal programming experience to generate computer models and simulations.
This interactive simulation offers a way for students to explore the connection …
This interactive simulation offers a way for students to explore the connection between uniform circular motion and simple harmonic motion. The display shows two blocks on springs oscillating horizontally, and two balls traveling in uniform motion in a circular path. The user sets initial values for the blocks: amplitude, mass, and spring constant. The two balls are automatically set to the same values. Students are able to see that the circular motion of each ball corresponds to the motion of the blocks, thus promoting understanding of the basic equation for objects undergoing simple harmonic motion. To extend the learning, users can set values for the phase angles of each block. Also included by the author is a set of suggested activities to accompany the simulation. See Related Materials for an extensive online multimedia tutorial from PhysClips on the topic of simple harmonic motion. This applet was created with EJS, Easy Java Simulations, a modeling tool that allows users without formal programming experience to generate computer models and simulations.
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