The Simple Pendulum
Investigating periodic motion under the force of gravity.
The Concept: Pendulum Motion
A simple pendulum consists of a mass (the "bob") suspended from a pivot. When displaced and released, gravity creates a restoring force that pulls it back towards its equilibrium position, causing it to oscillate. For small angles, this motion is a very close approximation of Simple Harmonic Motion. Notice that the mass of the bob does not affect the period of the swing!
How to Use the Lab
- Press Start to see the pendulum swing.
- Adjust the Length (L) and Gravity (g) to see how they affect the period of oscillation.
- Change the Mass (m) and observe that it has no effect on the period.
- The graphs show the real-time angle, angular velocity, and angular acceleration.