Simple Pendulum

This is a teacher or student controlled, realistic 3d simulation that allows the investigation of Simple Harmonic Motion (SHM) of a simple swinging pendulum.  We use measurement of the motion to estimate the acceleration due to gravity. 

Different lengths for the pendulum can be used.  A timer is used to determine the period of the pendulum's swing

The user has control over the length of the cord, the timer contruls including its position, and giving impulse to the pendulum's bob.  The user is free to move anywhere within the laboratory in order to interact with the apparatus.