| A17-5 | Wilburforce pendulum |
| Purpose: | To demonstrate simple haronic motion. |
| Description: | This pendulum has three modes of oscillation: Simple pendulum, mass on a spring, and torsion pendulum. The periods of all three modes are different, but are close to each other. When the pendulum is set into motion, the system will pass cyclically from one mode to the next. |
| References: | Mx-11. |
| Equipment: | Wilburforce pendulum. |