Introduction
The moment of inertia is a physical quantity describing the inertia of a rigid body, which is related to the mass distribution and the position of the rotating axis of the rigid body. It is very important to determine the moment of inertia of an object correctly in engineering technology. The instrument uses laser photoelectric sensor and counting chronometer to measure the torsional oscillation period of the suspension plate. Through experiments, students can master the physical concept and experimental measurement method of the moment of inertia of an object, and understand the factors related to the moment of inertia of an object.
Experiments
1. Measure the moment of inertia using the three-string pendulum method
2. Measure the moment of inertia of two objects of same mass but with different mass distribution
3. Verify the parallel axis theorem of moment of inertia
Specifications
| Description |
Specifications |
| String Length of the Pendulum |
> 500 mm |
| Timing Resolution |
1 ms |
| Preset Count Number |
< 66 |
| Specimen |
small cylinder (2), circular disc (1), circular ring (1) |
Part List
| Description |
Qty |
| Main Unit |
incl base, slider, hanging arm, hanging disc, starting disc, pendulum strings |
| Laser Diode |
1 |
| Receiver |
1 |
| Counting Timer |
1 |
| Connection Wire |
2 |
| Circular Lever |
1 |
| Cylindrical Sample |
2 |
| Disc Sample |
1 |
| Ring Sample |
1 |
| Manual |
1 |