| A17-3 | Damped pendulum. |
| Purpose: | To demonstrate simple harmonic motion. |
| Description: | A spring and a mass consists of a suspension system. A dash pot is attached to the bottom of the mass and is immerged in a beaker with water or oil which may be used as a damping fluid. |
| References: | Mx-9. |
| Equipment: | spring, mass, dash pot , beaker and water or oil. |