Inertia Table
Product Code : EL-AM-10314
Quick answer: The Inertia Table is an aluminium disc of about 6 inch diameter, with a groove and three masses, hung by a steel wire at the centre of a framework on a circular levelling base. It is used to find the moment of inertia of an irregular body about an axis through its centre of gravity, perpendicular to its plane, by the dynamical method. Lab Exports manufactures it in Delhi for schools, colleges and universities.
Specifications
| Component | Specification |
|---|---|
| Disc | Aluminium, approx. 6 inch diameter, with groove |
| Masses | Three, fitted in the disc groove |
| Suspension | Steel wire at the centre of the framework |
| Frame | Long framework on a circular base |
| Base | Fitted with levelling screws |
| Method | Dynamical method for moment of inertia |
How the inertia table experiment is done
Suspended from its steel wire, the table is a torsion pendulum. Turned slightly and released, it oscillates with period T = 2 pi sqrt(I/C), where I is the moment of inertia of everything that turns with the wire and C is the torsional constant of the wire. Adding a body to the table raises I and lengthens the period, and comparing periods removes the need to know C.
- Level the base with the levelling screws so that the wire hangs vertically through the centre of the table.
- Give the empty table a small twist and time 20 oscillations to find its period T0.
- Load a body of known moment of inertia I1 on the table and find the new period T1.
- Replace it with the irregular body, placed so that its centre of gravity lies on the axis of the wire, and find the period T2.
- Calculate the moment of inertia of the irregular body from I = I1 (T2^2 - T0^2) / (T1^2 - T0^2).
Key features
- Aluminium disc of approx. 6 inch diameter with a groove
- Three masses fitted in the groove allow different moment-of-inertia configurations
- Steel wire suspension at the centre of the framework
- Circular base with levelling screws to set the wire vertical
- Designed for the dynamical method of finding moment of inertia
Documentation and supply
Installation instructions and a manual are supplied with the apparatus. Most Lab Exports products carry a one-year manufacturer warranty.
Lab Exports manufactures the Inertia Table at its works in Laxmi Nagar, Delhi, and supplies it to schools, colleges and universities in India and 60+ countries, handling the export documents for each shipment. More about the company is on the About Lab Exports page.
Related Applied Mechanics products
- Maxwell Vibration Needle (EL-AM-10313)
- Inertia Disc (EL-AM-10315)
- Lever/Force into Force Arm Apparatus (EL-AM-10312)
- Fly Wheel (EL-AM-10316)
- Torsion Pendulum (EL-AM-10317)
- Torsion Pendulum (Bridge Type) (EL-AM-10318)
The full range is in the Applied Mechanics section of the Physics Lab range.
Frequently asked questions
What does the inertia table measure?
It measures the moment of inertia of an irregular body about an axis through its centre of gravity, perpendicular to its plane, by the dynamical method.
How is the Inertia Table suspended?
The disc hangs by a steel wire at the centre of a long framework, which stands on a circular base fitted with levelling screws.
What is the price of the Inertia Table?
Prices are not published on the website. Add the Inertia Table to the Enquiry Cart with the Add To Cart button on this page, or email [email protected] with the house code EL-AM-10314 and the quantity, to receive a quotation.
Does Lab Exports manufacture the Inertia Table?
Yes. Lab Exports manufactures the Inertia Table at its works at 11/315, Lalita Park, Laxmi Nagar, Delhi 110092, under house code EL-AM-10314.
Request a quote
Email [email protected] with the house code EL-AM-10314 and the quantity, or add the Inertia Table to the Enquiry Cart with the Add To Cart button on this page. Tender buyers can also see the Tenders and OEM page.
