Ball rolling in a spherical dish on OHP.

Ball rolling in a spherical dish on OHP. There are many similarities between a pendulum undergoing simple harmonic motion by oscillating back and forth, and a ball undergoing simple harmonic motion by rolling back and forth without sliding in a concave spherical bowl. See the Welch Instruction Sheets (72 Leconte) for an analysis of this. Use a digital timer or stopwatch to measure the period of the oscillation